2024-03-28T12:33:44Z
https://journals.umcs.pl/index/oai
oai:ojs.umcsd.home.net.pl:article/803
2015-07-14T22:05:59Z
aaa:ART
"150630 2015 eng "
0137-6861
dc
Interferometer for receiving and recording of radio emission of the Sun at the frequency of 220 MHz
Gładyszewski, Longin
Pieńkos, Tomasz
The interference radiotelescope for receiving of the solar radio waves at frequency 220 MHz and continuous data obtained using the radiotelescope from 1 January 1985 to 30 November 2013 are presented.
www.wydawnictwo.umcs.lublin.pl
2015-06-30 00:00:00
application/pdf
https://journals.umcs.pl/aaa/article/view/803
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 68 (2013)
eng
Prawa autorskie (c) 2015 Longin Gładyszewski, Tomasz Pieńkos
oai:ojs.umcsd.home.net.pl:article/2214
2016-04-29T10:28:35Z
aaa:ART
"160429 2016 eng "
0137-6861
dc
Geochemical study of precipitates in the architectural surfaces from Bern, Switzerland
Huber, Miłosz Andrzej
Geology and Litosphere Protection Department, Maria Curie -Skłodowska Uniwersity
Hałas, Stanisław
Institute of Physics, UMCS, pl. M. Curie-Sklodowskiej 1, 20-031 Lublin
precipitates; sulfate; geochemistry; pollution; microscopy; isotope analysis
This geochemical study aims to resolve genesis of precipitation spots on the walls on the Nydeggbrücke in Bern, Switzerland. The bridge is composed of Jurassic limestone and dolomites and coated on both sides with Miocene flysch sandstone. As a result of infiltration of aqueous solutions derived directly from the road embankment into the sandstone, sulfate encrustation on the walls of sandstone has been formed.
The study of these precipitates using optical and electron microscopy clearly shows dominant sulfate phases are gypsum (calcium sulfate), mirabilite (sodium hydrated sulfate) and polyhalite (potassium, calcium and magnesium sulfate). Impurities of Ni, Cu, Zn and Pb was encountered by ICP-MS analysis. Identified polymetallic mineralization is associated with the infrastructure of the bridge and the accumulation of pollution from vehicular traffic. This is also confirmed by sulfur and oxygen stable isotope analyses of sulfates.
www.wydawnictwo.umcs.lublin.pl
2016-04-29 12:28:35
application/pdf
https://journals.umcs.pl/aaa/article/view/2214
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 70 (2015)
eng
https://journals.umcs.pl/aaa/article/download/2214/5640
https://journals.umcs.pl/aaa/article/download/2214/5641
https://journals.umcs.pl/aaa/article/download/2214/5642
https://journals.umcs.pl/aaa/article/download/2214/5643
https://journals.umcs.pl/aaa/article/download/2214/5644
https://journals.umcs.pl/aaa/article/download/2214/5645
https://journals.umcs.pl/aaa/article/download/2214/5646
https://journals.umcs.pl/aaa/article/download/2214/5647
Prawa autorskie (c) 2016 Miłosz Andrzej Huber
oai:ojs.umcsd.home.net.pl:article/1982
2016-04-29T10:28:35Z
aaa:ART
"160429 2016 eng "
0137-6861
dc
Problems with energy of waves described by Korteweg – de Vries equation
Karczewska, Anna
Faculty of Mathematics, Computer Science and Econometrics, University of Zielona Góra
Rozmej, Piotr
Faculty of Physics and Astronomy,
University of Zielona Góra http://www.uz.zgora.pl/~prozmej
Rutkowski, Łukasz
Faculty of Physics and Astronomy,
University of Zielona Góra
Different forms of the Korteweg -- de Vries equation and their invariants are presented. Different formulas for the energy of the system described by KdV equation are compared to each other for fixed and moving coordinate systems. It is shown that the energy conservation holds only in moving coordinate systems.
www.wydawnictwo.umcs.lublin.pl
2016-04-29 12:28:35
application/pdf
https://journals.umcs.pl/aaa/article/view/1982
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 70 (2015)
eng
Prawa autorskie (c) 2016 Piotr Rozmej
oai:ojs.umcsd.home.net.pl:article/2146
2016-04-29T10:28:35Z
aaa:ART
"160429 2016 eng "
0137-6861
dc
Isotopic studies of nitrates – a short review
Gebus, Beata
Uniwersytet Marii Curie-Skłodowskiej w Lublinie
Hałas, Stanisław
Uniwersytet Marii Curie-Skłodowskiej w Lublinie
nitrogen; nitrate; isotopic analysis; δ15N value; δ18O value
Nitrogen is an essential element for life. One of its available forms are nitrates - the compounds playing a key role in the biogeochemical N cycle. However, excessive amounts of nitrates may be harmful to organisms and the environment, therefore in recent years the emphasis is on continuous monitoring of quality of consumed water. Nitrates from different sources have wide, but different ranges δ15N and δ18O. Also researchers observed typical changes in both delta values induced by biological processes and in the case of mixing water with anthropogenic nitrates. This is a reason why the isotopic analysis are often used to identify the source of contamination in a reservoir or to quantitatively describe the processes occurring in an ecosystem.
In this review article, we present a model of the global nitrogen cycle, along with the latest data on the disturbances caused by human activity. We describe the processes occurring in the N cycle and biogeochemical mechanisms, which modify the nitrogen isotopic composition in their compounds. We also present a short description of analytical techniques utilized for studying isotopic compositions of nitrates. In addition, we discussed the methods for extraction and preparation of nitrates from freshwater and ocean water, by determining the δ15N, δ18O and δ17O (or Δ17O) values. The final part is a description of applications of developed techniques for environmental research.
www.wydawnictwo.umcs.lublin.pl
2016-04-29 12:28:35
application/pdf
https://journals.umcs.pl/aaa/article/view/2146
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 70 (2015)
eng
Prawa autorskie (c) 2016 Beata Gebus, Stanisław Hałas
oai:ojs.umcsd.home.net.pl:article/808
2015-07-14T22:05:59Z
aaa:ART
"150630 2015 eng "
0137-6861
dc
Comment on ‘Bulk-plasmon contribution to the work function of metals’
Durakiewicz, Tomasz
Hałas, Stanisław
Simple derivation of work function of metals based on the bulk-plasmon contribution is discussed here in a form of a comment to previously published work. We show that such a derivation is neither the fi first of its kind, nor it is in agreement with experimental data. Incidentally, the physical foundations of the proposed derivation appear to be flawed.
www.wydawnictwo.umcs.lublin.pl
2015-06-30 00:00:00
application/pdf
https://journals.umcs.pl/aaa/article/view/808
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 68 (2013)
eng
Prawa autorskie (c) 2015 Tomasz Durakiewicz, Stanisław Hałas
oai:ojs.umcsd.home.net.pl:article/807
2015-07-14T22:05:59Z
aaa:ART
"150630 2015 eng "
0137-6861
dc
Controversies about the value of the third cosmic velocity
Hałas, Stanisław
Pacek, Adrian
The purpose of writing this article was to derivate the formula for the third cosmic velocity using only the laws of conservation in the heliocentric reference system. It turns out that it can be done by using elementary mathematics, thanks to which the reasoning and calculations are affordable for one interested in this subject. By the way, we wanted to discuss the errors that appear even in well-known textbooks and professional articles, whose commitment leads to incorrect results. The magnitudes of the third cosmic velocity obtained by us are: v3average = 16.68 km/s, v3perihelion = 16.57 km/s and v3aphelion = 16.79 km/s.
www.wydawnictwo.umcs.lublin.pl
2015-06-30 00:00:00
application/pdf
https://journals.umcs.pl/aaa/article/view/807
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 68 (2013)
eng
Prawa autorskie (c) 2015 Stanisław Hałas, Adrian Pacek
oai:ojs.umcsd.home.net.pl:article/806
2015-07-14T22:05:59Z
aaa:ART
"150630 2015 eng "
0137-6861
dc
About a new suggested interpretation of special theory of relativity within a three-dimensional Euclid space
Fiscaletti, Davide
Sorli, Amrit
An interpretation of special theory of relativity is proposed, in which the fundamental arena of physical processes is an Euclid three-dimensional space where time exists only as a numerical order of material changes and the duration of material changes is a proper, physical scaling function of the numerical order. This model introduces interesting perspectives in the study of several phenomena inside special relativity, such as aberration of light, Doppler effect, Jupiter’s satellites occultation and radar ranging of the planets.
www.wydawnictwo.umcs.lublin.pl
2015-06-30 00:00:00
application/pdf
https://journals.umcs.pl/aaa/article/view/806
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 68 (2013)
eng
Prawa autorskie (c) 2015 Davide Fiscaletti
oai:ojs.umcsd.home.net.pl:article/805
2015-07-14T22:05:59Z
aaa:ART
"150630 2015 eng "
0137-6861
dc
Strontium isotope composition of sedimentary rocks and its application to chemostratigraphy and palaeoenvironmental reconstructions
Wierzbowski, Hubert
Strontium isotope composition of seawater is homogenous in all oceans and marginal seas but has varied through time with changing strontium fluxes. Strontium isotope ratio of ancient seawater may be reconstructed from well-preserved authigenic minerals and used for dating marine sediments. Because of a change in the strontium isotope ratio between sea- and freshwaters it can also be employed for the determination of palaeosalinities or the reconstruction of diagenetic processes of marine limestones. A review of methodology and practical hints concerning the utilization of strontium isotopes in geological studies of both marine and brackish sediments are presented in the current article.
www.wydawnictwo.umcs.lublin.pl
2015-06-30 00:00:00
application/pdf
https://journals.umcs.pl/aaa/article/view/805
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 68 (2013)
eng
Prawa autorskie (c) 2015 Hubert Wierzbowski
oai:ojs.umcsd.home.net.pl:article/804
2015-07-14T22:05:59Z
aaa:ART
"150630 2015 eng "
0137-6861
dc
FEM application in studies of mechanical properties of the C-Pd film
Rymarczyk, Joanna
Comparison of numerical simulation and experimental data for nanoindentation studies of nanostructural carbonaceous-palladium films (C-Pd) is presented.
Finite Element Method (FEM) and ANSYS program (Ansys, Inc) were used. Traditional Oliver–Pharr method for cone and spherical shaped indenter were applied for FEM modelling of nanoindentation experiment. FEM simulations showed that Pd nanograins are moved in carbon matrix toward the film surface due to an external stress. Distribution of palladium grains in the film volume influence on the Young modulus and nanohardness was also found.
www.wydawnictwo.umcs.lublin.pl
2015-06-30 00:00:00
application/pdf
https://journals.umcs.pl/aaa/article/view/804
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 68 (2013)
eng
Prawa autorskie (c) 2015 Joanna Rymarczyk
oai:ojs.umcsd.home.net.pl:article/2213
2016-04-29T10:28:35Z
aaa:BIO
"160429 2016 eng "
0137-6861
dc
Professor Stanisław Szpikowski: a man, a scholar, a teacher
Kamiński, Wiesław Andrzej
Maria Curie-Sklodowska University
Stanislaw Szpikowski, biographical information, scholar, teacher
www.wydawnictwo.umcs.lublin.pl
2016-04-29 12:28:35
application/pdf
https://journals.umcs.pl/aaa/article/view/2213
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 70 (2015)
eng
Prawa autorskie (c) 2016 Wiesław Andrzej Kamiński
oai:ojs.umcsd.home.net.pl:article/530
2018-09-04T05:54:21Z
aaa:ART
"150522 2015 eng "
0137-6861
dc
δ37Cl of waters from the Akyatan lagoon, Turkey
Pelc, Andrzej
Lécuyer, Christophe
Bodergat, Anne-Marie
Hałas, Stanisław
We report the first δ37Cl data for surface waters of the Akyatan lagoon, Turkey, from 12 stations sampled over the period 2005 to 2006. The recorded variation of δ37Cl values is fairly small, from -0.4 to +0.6 ‰ vs. SMOC, though the environmental conditions were highly variable seasonally. The salinity of the studied waters varied from 2.8 to 95 g/L and the δD vs. δ18O plot significantly departures from the World Meteoric Water Line (WMWL) with a slope of 5.43±0.19. Chlorine isotopes indicate a weak positive correlation between δ37Cl and δD of water and its salinity. This may be due to mixing between seawater and distinct sources of freshwater. The small spread of obtained δ37Cl results demands enhanced precision of analysis and careful sample preparation.
www.wydawnictwo.umcs.lublin.pl
2015-05-22 00:00:00
application/pdf
https://journals.umcs.pl/aaa/article/view/530
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 69 (2014)
eng
Prawa autorskie (c) 2015 Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica
oai:ojs.umcsd.home.net.pl:article/529
2018-09-04T05:54:21Z
aaa:ART
"150522 2015 eng "
0137-6861
dc
Isotope geochronology: models versus reality. Invited lecture presented at the 12th geochronological conference “Dating of minerals and rocks XII”, UMCS, Lublin, 16.10.2014
Burchart, Jan
Majority of the papers on isotopic dating of minerals and rocks have been devoted to some new geochronological data important for geology or to developments of apparatus and improvements of laboratory techniques and procedures. However, there are some basic problems concerning credibility of the data published (including the “error brack-ets”), and their geological meaning, which rarely are touched on. The issues to be raised may be grouped into two categories: (1) distortion in the course of preparatory operations and final measurements, and (2) some doubts concern-ing geological interpretation of the data and the models used. First of all it should be realized that what we really analyse in a spectrometer is not an existing rock or mineral but a powder produced by many steps of consecutive procedures, each of them capable of irreversibly distorting the original composition.
www.wydawnictwo.umcs.lublin.pl
2015-05-22 00:00:00
application/pdf
https://journals.umcs.pl/aaa/article/view/529
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 69 (2014)
eng
Prawa autorskie (c) 2015 Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica
oai:ojs.umcsd.home.net.pl:article/528
2018-09-04T05:54:21Z
aaa:ART
"150522 2015 eng "
0137-6861
dc
Positive and negative feedback loops coupled by common transcription activator and repressor
Sielewiesiuk, Jan
Łopaciuk, Agata
Dynamical systems consisting of two interlocked loops with negative and positive feedback have been studied using the linear analysis of stability and numerical solutions. Conditions for saddle-node bifurcation were formulated in a general form. Conditions for Hopf bifurcations were found in a few symmetrical cases. Auto-oscillations, when they exist, are generated by the negative feedback repressive loop. This loop determines the frequency and amplitude of oscillations. The positive feedback loop of activation slightly modifies the oscillations. Oscillations are possible when the difference between Hilll’s coefficients of the repression and activation is sufficiently high. The highly cooperative activation loop with a fast turnover slows down or even makes the oscillations impossible. The system under consideration can constitute a component of epigenetic or enzymatic regulation network.
www.wydawnictwo.umcs.lublin.pl
2015-05-22 00:00:00
application/pdf
https://journals.umcs.pl/aaa/article/view/528
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 69 (2014)
eng
Prawa autorskie (c) 2015 Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica
oai:ojs.umcsd.home.net.pl:article/527
2018-09-04T05:54:21Z
aaa:ART
"150522 2015 eng "
0137-6861
dc
A cycle of enzymatic reactions with some properties of neuronal circuits
Sielewiesiuk, Jan
A cycle of four methylation and four demethylation reactions with repression or allosteric inhibition of enzymes is considered. The corresponding dynamical system is characterised by two parameters: the sum of reagent concentrations (C) and the ratio of rate constants of forward and backward reactions (k). In a symmetrical case (k=1) the system has a unique equilibrium. At C>4 the equilibrium is unstable and the system has oscillatory solutions. At k essentially different from 1, the system becomes excitable or behaves as a bistable trigger.
www.wydawnictwo.umcs.lublin.pl
2015-05-22 00:00:00
application/pdf
https://journals.umcs.pl/aaa/article/view/527
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 69 (2014)
eng
Prawa autorskie (c) 2015 Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica
oai:ojs.umcsd.home.net.pl:article/526
2018-09-04T05:54:21Z
aaa:ART
"150522 2015 eng "
0137-6861
dc
Space-time curvature of general relativity and energy density of a three-dimensional quantum vacuum
Fiscaletti, Davide
Sorli, Amrit
A three-dimensional quantum vacuum condensate is introduced as a funda-mental medium from which gravity emerges in a geometro-hydrodynamic lim-it. In this approach, the curvature of space-time characteristic of general rela-tivity is obtained as a mathematical value of a more fundamental actual varia-ble energy density of quantum vacuum which has a concrete physical meaning. The fluctuations of the quantum vacuum energy density suggest an interesting solution for the dark energy problem.
www.wydawnictwo.umcs.lublin.pl
2015-05-22 00:00:00
application/pdf
https://journals.umcs.pl/aaa/article/view/526
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 69 (2014)
eng
Prawa autorskie (c) 2015 Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica
oai:ojs.umcsd.home.net.pl:article/336
2018-09-04T05:54:12Z
aaa:ART
"150522 2015 eng "
0137-6861
dc
Carbon isotopic composition of early-diagenetic methane: variations with sediments depth
Jędrysek, Mariusz Orion
Hałas, Stanisław
Pieńkos, Tomasz
We demonstrate the annual cycle of methane in fresh sediments of two lakes – Moszne (E Poland) and Skrzynka (W Poland). The vertical gradient in δ13C(CH4) values varied widely from about -4.5‰/(-1 m) in late summer 1993 to about +2.5‰/(-1 m) in late winter, in the uppermost sediment profiles of about 3-meters in length. These vertical variations apparently are not due to oxidation or temperature changes, but rather to the higher gradient of the downward decrease of production rates via the acetic acid fermen-tation pathway rather than via the CO2-H2 pathway. The production of methane and δ13C(CH4) values are the highest during summer while the lowest during winter, reflect-ed especially during surface sampling. The downward gradient of δ13C in winter, late autumn and, at greater depths, in late summer results from isotope enrichment of the residual pool of precursors of methane, predominantly CO2.
www.wydawnictwo.umcs.lublin.pl
2015-05-22 00:00:00
application/pdf
https://journals.umcs.pl/aaa/article/view/336
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 69 (2014)
eng
Prawa autorskie (c) 2015 Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica
oai:ojs.umcsd.home.net.pl:article/335
2018-09-04T05:54:12Z
aaa:ART
"150522 2015 eng "
0137-6861
dc
Cryogenic separation of glauconite and foraminifera from Cretaceous/Paleogene boundary in Nasiłów, Poland, for radiometric dating and stratigraphy
Wójtowicz, Artur
Pieńkos, Tomasz
Hałas, Stanisław
Peryt, Danuta
Durakiewicz, Tomasz
Młynek, Agnieszka
We have demonstrated that cryogenic separation of glauconite and foraminifera from the host rock allows to preserve the integrity of extracted specimens, assures minimal damage and causes no artificial fractionation. The K/Ar dating of two glauconite samples from Cretaceous/Paleogene boundary in the Nasiłów outcrop yields 62.0 and 66.3 Ma. The discrepancy in these dates, much larger than expected from analytical precision, may result from too low %K, which was 5.91 and 5.73, respectively.
www.wydawnictwo.umcs.lublin.pl
2015-05-22 00:00:00
application/pdf
https://journals.umcs.pl/aaa/article/view/335
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 69 (2014)
eng
Prawa autorskie (c) 2015 Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica
oai:ojs.umcsd.home.net.pl:article/288
2018-09-04T05:54:10Z
aaa:ART
"150522 2015 eng "
0137-6861
dc
Radial distribution of stars in globular clusters inferred from the Monte Carlo approach
Pieńkos, Tomasz
Hałas, Stanisław
In this paper we try to reconstruct the spatial distribution of stars in globular clusters (GCs) from heuristic statistical ideas. Such 3D radial distributions are important for understanding physical conditions across the clusters. Our method is based on converting spherically symmetrical functions such as exp(-r2/s2), exp(-r/s), 1/(1 + r2/s2) 2 and 1/(1 + r2/s2)m, (s and m are parameters) to 2D star distributions in a GCs by the Monte Carlo method. By comparing the obtained 2D profiles with observational ones we demonstrate that Gaussian or exponential distribution functions yield too short extensions of periph-eral parts of the GCs profiles. The best candidate for fitting GCs profiles has been found to be the generalized Schuster density law: C/ (1 + r2/s2)m, where C is the normalization constant and s and m are adjustable parameters. These parameters display a nonlinear correlation with s varying from 0.1 to 10 pc, whilst m is close to 2. Using this law the radiation temperatures across M 13 and 47 Tucane were estimated.
www.wydawnictwo.umcs.lublin.pl
2015-05-22 00:00:00
application/pdf
https://journals.umcs.pl/aaa/article/view/288
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 69 (2014)
eng
Prawa autorskie (c) 2015 Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica
oai:ojs.umcsd.home.net.pl:article/2374
2016-04-29T10:28:35Z
aaa:ART
"160429 2016 eng "
0137-6861
dc
Why are variations in bromine isotope compositions in the Earth's history larger than chlorine isotope compositions?
Eggenkamp, Hans
Onderzoek & Beleving, Bussum http://orcid.org/0000-0001-5874-0157
chlorine isotopes; bromine isotopes; Phanerozoic; redox
In this paper we discuss the marked discrepancy in global chlorine and bromine isotope variations. While, based on experimentally and theoretically determined fractionation factors, it is expected that bromine isotope variations should be, depending on the process, 2 to 7 times less than chlorine isotope variations it is observed that in formation brines the isotope variations of bromine are at least of the same size as chlorine isotope variations, and regularly even larger. In this paper we argue that this is caused by the fact that oxidation-reduction processes play a more important role in bromine isotope geochemistry than in chlorine isotope geochemistry. Due to the fact that the bromide ion is more easily to oxidise than the chloride ion Rayleigh effects can cause the observed larger variations in bromine isotope geochemistry. In this paper we propose that biochemical reactions (oxidation of bromide ions to methyl bromide) may be the major cause for this effect. Although we do not yet understand the full processes that take place we show that oxidation-reduction processes must be the main effect to explain the differences between the two isotope systems and propose that more research is developed to understand how the processes cause the observed variations.
www.wydawnictwo.umcs.lublin.pl
2016-04-29 12:28:35
application/pdf
https://journals.umcs.pl/aaa/article/view/2374
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 70 (2015)
eng
https://journals.umcs.pl/aaa/article/download/2374/6567
Prawa autorskie (c) 2016 Hans Eggenkamp
oai:ojs.umcsd.home.net.pl:article/4451
2017-02-23T08:57:48Z
aaa:ART
"170223 2017 eng "
0137-6861
dc
The calculation of water-rock ratios using trace element (Li, B) stable isotopes
Simon, Laurent
Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés CNRS UMR 5023, University Claude Bernard Lyon 1
Lécuyer, Christophe
Laboratoire de Géologie de Lyon, CNRS UMR 5276, University Claude Bernard Lyon 1 & Institut Universitaire de France
Putelat, Thibaut
Laboratoire de Mécanique des Fluides et d’Acoustique, CNRS UMR 5509 Ecole Centrale de Lyon, 69134 Ecully cedex
The amount of aqueous fluids circulating into the oceanic crust can be estimated using mass balance equations based on stable isotope exchange between rock and water. Unlike oxygen and strontium, isotopic exchange of trace elements (such as B or Li) between fluids and rocks, operates along with a chemical evolution of the rocks (e.g. a large enrichment of B or Li) that must be integrated into any model of water-rock interaction. We propose a general dimensionless mass balance equation for single-pass open systems that describes the equilibrium elemental distribution and the isotopic composition of reacting rocks as a function of the amount of circulating water. Water-rock ratios calculated from B compositions of hydrothermally-altered basalts range from 8 to 100. They are lower than those previously published (most W/R > 300) but comparable to those inferred from Sr isotope ratios measured in the same samples (3 < W/R < 30). Similar low water-rock ratios from 2 to 20 are calculated from Li isotope compositions of altered basalts and serpentinized peridotites.
www.wydawnictwo.umcs.lublin.pl
2017-02-23 09:57:48
application/pdf
https://journals.umcs.pl/aaa/article/view/4451
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 71 (2016)
eng
Prawa autorskie (c) 2017 Christophe Lécuyer
oai:ojs.umcsd.home.net.pl:article/4353
2017-02-23T08:57:48Z
aaa:ART
"170223 2017 eng "
0137-6861
dc
Optical and TEM characterization of phase transformation in Zn ion implanted and thermal oxidized quartz
Privezentsev, Vladimir
Institute of Physics & Technology of the Russian Academy of Sciences
quartz, zinc, ion implantation, annealing, ZnO nanoparticles
Metal and metal oxide nanoparticles (NPs) embedded in various matrices have been the object of increasing interest due to their peculiar physical properties significantly different from the corresponding ones of bulk material. Metallic Zn NPs can be used in UV photo-detectors. Zinc oxide NPs play an important role too, since ZnO has direct band gap of 3.37eV, large exiton binding energy of 60meV, sorption effect, room temperature ferromagnetism and others. So they can be used in varies perspective electron devices. In this paper the optical parameters and transmission electron microscopy (TEM) characterization of Zn implanted quartz during NP formation at annealing are reported.
Optical-grade high-pure (OH-: 50ppb) amorphous quartz slides were implanted by 64Zn+ ions with fluence of 5×1016/cm2 and energy of 50keV. To avoid the magnificent substrate heating during implantation the ion current density was less than 0.5μA/cm2. Than the samples were subjected to isochronally during 1h oxidation in temperature ranges from 400 up to 800oC. The Zn contained phase creation and its thermal evolution were investigated by recording the optical transmittance spectra at room temperature in a spectral range of 200-800nm and by photoluminescence at temperatures of 10-300K in a spectral range of 350-800nm using an illumination of He-Cd laser with wavelength of 325nm. Visualization and identification of NPs was made by study of the cross section samples TEM fitted with electron diffraction, an EDAX detector attachment for X-ray energy dispersive spectroscopy (EDS), and with a high angle annular dark field detector (HAADF) for scanning operation. The EDS maps of the element distribution and the NP sizes were determined in the scanning TEM regime.
As a result of these studies it was found that after the quartz implantation by 64Zn+ ions with fluence of 5×1016/cm2 and energy of 50keV the amorphous metallic Zn NPs with an average radius of 3 nm were created. During process of sequentially isochronally furnace annealing in oxygen atmosphere in 1h in temperature ranges from 400 up to 800oC in samples there was phase transformation from metallic Zn phase to its oxide form. After annealing at 800oC the Zn NPs transform to the ZnO or/and Zn2SiO4 phase with average radius of 4,5nm.
www.wydawnictwo.umcs.lublin.pl
2017-02-23 09:57:48
application/pdf
https://journals.umcs.pl/aaa/article/view/4353
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 71 (2016)
eng
Prawa autorskie (c) 2017 Vladimir Privezentsev
oai:ojs.umcsd.home.net.pl:article/3897
2017-02-23T08:57:48Z
aaa:ART
"170223 2017 eng "
0137-6861
dc
An Exact Analytical Solution to the Shallow Water Equations Near Beaches
Yourdkhani, M.
Civil Engineering Group, Alaodoleh Semnani Institute of Higher Education, Garmsar
Zarrinkamar, Saber
Department of Basic Sciences, Garmsar Branch, Islamic Azad University, Garmsar http://orcid.org/0000-0001-9128-4624
The nonlinear differential equation governing the dynamics of water waves can be well approximated by a linear counterpart in the case of shallow waters near beaches. The linear equation, which is of second order nature, cannot be exactly solved in many apparently simple cases. In our work, we consider the shape of system as a complete second-order polynomial which contains the constant (step-like), linear and quadratic shapes near the beach. We then apply some novel transformations and transform the problem into a form which can be solved in an exact analytical manner via the powerful Nikiforov-Uvarov technique. The eigenfunctions of the problem are obtained in terms of the Jacobi polynomials and the eigenvalue equation is reported for any arbitrary mode.
www.wydawnictwo.umcs.lublin.pl
2017-02-23 09:57:48
application/pdf
https://journals.umcs.pl/aaa/article/view/3897
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 71 (2016)
eng
Prawa autorskie (c) 2017 saber zarrinkamar
oai:ojs.umcsd.home.net.pl:article/2878
2017-02-23T08:57:48Z
aaa:ART
"170223 2017 eng "
0137-6861
dc
Hellmann Potential in Spinless Salpeter Equation with Potential Barrier within the Framework of Nikiforov-Uvarov method
Antia, Akaninyene Daniel
Department of Physics, University of Uyo, Nigeria
Hellmann potential, spinless Salpeter equation, Nikiforov-Uvarov method, potential barrier
In this paper, we have solved the spinless Salpeter equation (SSE) with Hellmann potential under the framework of NIkiforov-Uvarov (NU) method. The energy eigenvalues and corresponding wave functions for this system express in terms of the Jacobi polynomial are also obtained. With the help of approximation scheme the potential barrier has been evaluated. The results obtained in this work would have many applications in nuclear physics, chemical physics, atomic and molecular physics, molecular chemistry and other related areas as the results under limiting cases could be used to study the binding energy and interaction of some diatomic molecules. As a guide to interested readers, we have provided numerical data which discuss the energy spectra for this system.
www.wydawnictwo.umcs.lublin.pl
2017-02-23 09:57:48
application/pdf
https://journals.umcs.pl/aaa/article/view/2878
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 71 (2016)
eng
Prawa autorskie (c) 2017 Akaninyene Daniel Antia
oai:ojs.umcsd.home.net.pl:article/2808
2017-02-23T08:57:48Z
aaa:ART
"170223 2017 eng "
0137-6861
dc
Dynamic Quantum Vacuum and Relativity
Fiscaletti, Davide
energy density of quantum vacuum, Sagnac effect, relativity, dark energy, Mercury precession.
A model of a three-dimensional dynamic quantum vacuum with variable energy density is proposed. In this model, time we measure with clocks is only a mathematical parameter of changes running in quantum vacuum. Mass and gravity are carried by the variable energy density of quantum vacuum. Each elementary particle is a structure of quantum vacuum and diminishes the quantum vacuum energy density. Symmetry “particle – diminished energy density of quantum vacuum” is the fundamental symmetry of the universe which gives origin to the inertial and gravitational mass. Special relativity’s Sagnac effect in GPS system and important predictions of general relativity such as precessions of the planets, the Shapiro time delay of light signals in a gravitational field and the geodetic and frame-dragging effects recently tested by Gravity Probe B, have origin in the dynamics of the quantum vacuum which rotates with the earth.
www.wydawnictwo.umcs.lublin.pl
2017-02-23 09:57:48
application/pdf
https://journals.umcs.pl/aaa/article/view/2808
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 71 (2016)
eng
https://journals.umcs.pl/aaa/article/download/2808/8236
Prawa autorskie (c) 2017 Davide Fiscaletti
oai:ojs.umcsd.home.net.pl:article/2422
2017-02-21T11:48:08Z
aaa:IN
"160429 2016 eng "
0137-6861
dc
Editorial
Hałas, Stanisław
Institute of Physics, UMCS, Lublin
www.wydawnictwo.umcs.lublin.pl
2016-04-29 12:28:35
application/pdf
https://journals.umcs.pl/aaa/article/view/2422
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 70 (2015)
eng
Prawa autorskie (c) 2016 Stanisław Hałas
oai:ojs.umcsd.home.net.pl:article/2402
2016-04-29T10:28:35Z
aaa:ART
"160429 2016 eng "
0137-6861
dc
Intrinsic symmetries
Pędrak, Aleksandra
Institute of Physics, Maria Curie-Skłodowska University
Góźdź, Andrzej
Institute of Physics, Maria Curie-Skłodowska University
Gusev, A. A.
Joint Institute for Nuclear Research
Vinitsky, S. I.
Joint Institute for Nuclear Research
In this paper a concept of symmetry in the parameter space of the parameter dependent Hamiltonians is considered. The three different ways of realization of this symmetry is introduced. The example of analysis of this kind of symmetries is made in case of spherical harmonic oscillator. Some consequences of this symmetry for the electric type transition amplitudes of the electromagnetic nuclear radiation is shown.
www.wydawnictwo.umcs.lublin.pl
2016-04-29 12:28:35
application/pdf
https://journals.umcs.pl/aaa/article/view/2402
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 70 (2015)
eng
Prawa autorskie (c) 2016 Aleksandra Pędrak, Andrzej Góźdź, A. A. Gusev, S. I. Vinitsky
oai:ojs.umcsd.home.net.pl:article/2401
2016-04-29T10:28:35Z
aaa:ART
"160429 2016 eng "
0137-6861
dc
Dynamic effects and large – amplitude motion in Jacobi and Poincaré shape transitions in atomic nuclei
Mazurek, Katarzyna
The Niewodniczański Institut of Nuclear Physics, Polish Academy of Sciences
Dudek, Jerzy
IPHC/DRS and Université de Strasbourg
Maj, Adam
The Niewodniczański Institut of Nuclear Physics, Polish Academy of Sciences
Kmiecik, Maria
The Niewodniczański Institut of Nuclear Physics, Polish Academy of Sciences
Rouvel, David
IPHC/DRS and Université de Strasbourg
shape transition; collective Hamiltonian; zero-point vibration; rotating nucleus
The Jacobi and Poincaré shape transitions are very promising way to investigate the shape of the nucleus. The presented here quasi-phenomenological approach allows to estimate the experimental conditions which are necessary to observe these phenomena. The static energy minimum gives the spin ranges and the fissility of atomic nuclei soft for the shape transitions and available experimentally. Dynamical effects taken into account through the solving collective Hamiltonian for zero-point vibration estimation, changes the spin rages for the shape transitions. The static deformation of the nucleus constrained by the minimum of energy for given spin has been enhanced to dynamical nuclear shapes permitted by the zero point energy. The large amplitude vibrations around the static deformation gives the ensemble of nuclear shapes possible to be observed.
www.wydawnictwo.umcs.lublin.pl
2016-04-29 12:28:35
application/pdf
https://journals.umcs.pl/aaa/article/view/2401
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 70 (2015)
eng
Prawa autorskie (c) 2016 Katarzyna Mazurek, Jerzy Dudek, Adam Maj, Maria Kmiecik, David Rouvel
oai:ojs.umcsd.home.net.pl:article/4461
2017-02-23T08:57:48Z
aaa:BIO
"170223 2017 eng "
0137-6861
dc
Outline of Professor Włodzimierz Żuk (1916 – 1981) life
Hałas, Stanisław
Institute of Physics, UMCS, Lublin
www.wydawnictwo.umcs.lublin.pl
2017-02-23 09:57:48
application/pdf
https://journals.umcs.pl/aaa/article/view/4461
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 71 (2016)
eng
Prawa autorskie (c) 2017 Stanisław Hałas
oai:ojs.umcsd.home.net.pl:article/2358
2016-04-29T10:28:35Z
aaa:ART
"160429 2016 eng "
0137-6861
dc
Isotopic investigation of nitrates in Horyniec-Zdrój waters
Baran, Anna
Instytut Inżynierii Technicznej, Państwowa Wyższa Szkoła Techniczno-Ekonomiczna im. Ks. Bronisława Markiewicza w Jarosławiu
Baran, Ireneusz
Instytut Inżynierii Technicznej, Państwowa Wyższa Szkoła Techniczno-Ekonomiczna im. Ks. Bronisława Markiewicza w Jarosławiu
Gebus, Beata
Institute of Physics, University of M. Curie–Skłodowska
Hałas, Stanisław
Institute of Physics, University of M. Curie–Skłodowska
mineral and therapeutic waters; nitrate concentration; δ15N and δ18O in nitrates (NO3-); Horyniec-Zdrój
In this work the isotopes of oxygen and nitrogen were determined in nitrates of water samples collected in Horyniec Zdrój and they allowed the preliminary indication of the source of NO3– ion. The obtained δ15N and δ18O values of nitrates dissolved in the Róża III therapeutic water are +2.1, +13.1 ‰, respectively. They indicate the origin of NO3- ion from bacterial decomposition of organic matter which is abundant in the aquifer.
Interpretation of the processes affecting the chemical and isotopic composition of investigated waters was possible by taking into account earlier isotopic analyzes as well as chemical composition, geological structure and hydrogeological conditions prevailing in the aquifer. The results and discussion presented in this paper have excluded the possible influence of external contaminants in Horyniec-Zdrój waters used for therapeutic purposes.
www.wydawnictwo.umcs.lublin.pl
2016-04-29 12:28:35
application/pdf
https://journals.umcs.pl/aaa/article/view/2358
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 70 (2015)
eng
Prawa autorskie (c) 2016 Anna Baran, Ireneusz Baran, Beata Gebus, Stanisław Hałas
oai:ojs.umcsd.home.net.pl:article/2357
2016-04-29T10:28:35Z
aaa:ART
"160429 2016 eng "
0137-6861
dc
Role of the shell and pairing effects in nuclear fission
Pomorski, Krzysztof
Institute of Physics, University of M. Curie–Skłodowska
Nerlo-Pomorska, Bożena
Institute of Physics, University of M. Curie–Skłodowska
nuclear fission; scission point; barrier heights; shell and pairing effects
The description of spontaneous fission of actinides by the macroscopic-microscopic method consisting of the Lublin Strasbourg Drop model and the two deformed Nilsson wells or the Yukawa folded single-particle potential is presented. The microscopic shell corrections are obtained by the Strutinsky method, while the pairing correlations are taken into account within the BCS theory. It was shown that the pairing strength should grow with increasing deformation of fissioning nucleus in order to obtain right estimates of the pairing field in the fission fragments. The fission barrier heights are estimated using the topographical theorem of Swiatecki.
www.wydawnictwo.umcs.lublin.pl
2016-04-29 12:28:35
application/pdf
https://journals.umcs.pl/aaa/article/view/2357
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 70 (2015)
eng
Prawa autorskie (c) 2016 Krzysztof Pomorski, Bożena Nerlo-Pomorska
oai:ojs.umcsd.home.net.pl:article/2356
2016-04-29T10:28:35Z
aaa:BIO
"160429 2016 eng "
0137-6861
dc
A review of some scientific papers by Prof. Stanisław Szpikowski
Góźdź, Andrzej
Institute of Physics, University of M. Curie–Skłodowska
A short review of the most important (arbitrary choice) papers published by Prof. Stanisław Szpikowski (1926-2014) is presented.
www.wydawnictwo.umcs.lublin.pl
2016-04-29 12:28:35
application/pdf
https://journals.umcs.pl/aaa/article/view/2356
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 70 (2015)
eng
Prawa autorskie (c) 2016 Andrzej Góźdź
oai:ojs.umcsd.home.net.pl:article/2319
2016-04-29T10:28:35Z
aaa:ART
"160429 2016 eng "
0137-6861
dc
Analytical solutions of Schrödinger equation with new solvable potential family V(r)=A/r^2-B/r+Cr^(δ+1) via Nikiforov-Uvarov (NU) method
Antia, Akaninyene Daniel
Theoretical Physics Group, Department of Physics, University of Uyo-Nigeria
Akpan, Ita Okon
Department of Physics, University of Calabar-Nigeria
Ikot, Akpan Ndem
Theoretical Physics Group, Department of Physics, University of Uyo-Nigeria
Maghsoodi, Elham
Department of Basic Sciences, Shahrood Branch, Islamic Azad University
Zarrinkamar, Saber
Department of Basic Sciences, Shahrood Branch, Islamic Azad University, Shahrood
Hassanabadi, Hassan
Department of Basic Sciences, Shahrood Branch, Islamic Azad University
Schrödinger equation; Energy eigenvalue; Eigenfunction; Diatomic molecules; Hellmann-Feynmann theorem
In this paper, we have presented the exact solutions of the Schrödinger equation with the family of potentials V(r)=A/r^2-B/r+Cr^(δ+1). We have obtained the energy eigenvalues and the corresponding wave functions expressed in terms of the associated Laguerre polynomials for using the Nikiforov-Uvarov (NU) method. The energy levels for each case is computed for diatomic molecules H2, CO, NO and N2 for various values of and . We have also computed the expectation values of, and the Virial theorem using the Hellmann-Feynmann theorem (HFT).
www.wydawnictwo.umcs.lublin.pl
2016-04-29 12:28:35
application/pdf
https://journals.umcs.pl/aaa/article/view/2319
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 70 (2015)
eng
Prawa autorskie (c) 2016 Akaninyene Daniel Antia, Ita Okon Akpan, Akpan Ndem Ikot, Elham Maghsoodi, Saber Zarrinkamar, Hassan Hassanabadi
oai:ojs.umcsd.home.net.pl:article/2318
2016-04-29T10:28:35Z
aaa:ART
"160429 2016 eng "
0137-6861
dc
Carbon and oxygen isotope variability among foraminifera and ostracod carbonated shells
Fourel, François
Laboratoire CNRS UMR 5125 "Paléoenvironnements & Paléobiosphère", Université Lyon
Martineau, François
Laboratoire CNRS UMR 5125 "Paléoenvironnements & Paléobiosphère", Université Lyon
Emoke Tóth, Emoke
Department of Paleontology, University of Budapest
Görög, Agnes
Department of Paleontology, University of Budapest
Escarguel, Gilles
Laboratoire CNRS UMR 5125 "Paléoenvironnements & Paléobiosphère", Université Lyon
Lécuyer, Christophe
1. Laboratoire CNRS UMR 5125 "Paléoenvironnements & Paléobiosphère", Université Lyon
2. Institut Universitaire de France
stable isotope; foraminifera; ostracod; heterogeneity; single shell analysis
This study investigates the effect of biological and environmental inter-individual variability on the meaning of d18O and d13C values acquired on small carbonated shells. First we present data obtained with a MultiPrep automated carbonate system on small sample sizes of a homogeneous carbonate material: Carrara marble. This demonstrates the capacities of the analytical system to reliably run small amounts of carbonates even down to 10 mg. Then we present two data sets obtained on real fossil samples of various size (sensu number of individual organisms) calibrated against the NBS19 carbonate standard. Both datasets evidence a clear trend of between-biological sample standard deviation increase for both d18O and d13C measurements when the number of pooled specimens per sample decreases. According to the results obtained from a systematic study of a geologically homogeneous sample of coeval fossil Elphidium foraminifera, we estimate that there is 95% of chances to reach between-biological sample standard deviation values higher than 1.02‰ (d18O) and 1.45‰ d13C) based on single-cell measurements. Such values are one order of magnitude higher than the instrumental standard deviations associated with these stable isotope ratios. Conversely, a minimum of 35 (d18O) and 44 (d13C) pooled specimens of Elphidium appears necessary to reach a between-sample standard deviation £ 0.25‰ with a probability of 95%. Such biological intrinsic and irreducible variability between coeval individuals, and thus samples, clearly questions the interest for single-cell analyses, more precisely, for coastal marine species, such as Elphidium, subject to many environmental changes during their life-time. Indeed, strong variations in salinity or temperature, as well as biogenic fractionation, could influence the isotopic composition of an individual specimen. Results might be less problematic for an average community including several tests. This paper underlines uncertainties linked to specific environments in which selected organisms live, especially for paleoceanographic or paleoclimatic reconstruction purposes where secular oxygen and carbon isotope variations typically range from 0.5 to 1.5‰.
www.wydawnictwo.umcs.lublin.pl
2016-04-29 12:28:35
application/pdf
https://journals.umcs.pl/aaa/article/view/2318
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 70 (2015)
eng
https://journals.umcs.pl/aaa/article/download/2318/6179
https://journals.umcs.pl/aaa/article/download/2318/6180
https://journals.umcs.pl/aaa/article/download/2318/6181
https://journals.umcs.pl/aaa/article/download/2318/6182
https://journals.umcs.pl/aaa/article/download/2318/6183
https://journals.umcs.pl/aaa/article/download/2318/6184
https://journals.umcs.pl/aaa/article/download/2318/6185
https://journals.umcs.pl/aaa/article/download/2318/6186
https://journals.umcs.pl/aaa/article/download/2318/6187
https://journals.umcs.pl/aaa/article/download/2318/6188
https://journals.umcs.pl/aaa/article/download/2318/6189
https://journals.umcs.pl/aaa/article/download/2318/6190
Prawa autorskie (c) 2016 François Fourel, François Martineau, Emoke Emoke Tóth, Agnes Görög, Gilles Escarguel, Christophe Lécuyer
oai:ojs.umcsd.home.net.pl:article/2317
2016-04-29T10:28:35Z
aaa:ART
"160429 2016 eng "
0137-6861
dc
Use of negative ion mass spectrometry for simultaneous determination of sulfur isotope ratios δ33S and δ34S
Hałas, Stanisław
Institute of Physics, UMCS, Lublin
Pieńkos, Tomasz
Institute of Physics, UMCS, Lublin
Pelc, Andrzej
Institute of Physics, UMCS, Lublin
Wójtowicz, Artur
Institute of Physics, UMCS, Lublin
isotope anomalies; terrestrial minerals; sulfates; sulfides
We describe a newly constructed dual inlet system and triple collector for precision study of sulfur isotope anomalies, Δ33S, using negative ion mass spectrometry. SO2 gas is admitted to the ion source where it is ionized ether to SO- or S- by low energy electrons (resonant ionization) and the ion beam is analyzed by a single focusing magnetic analyzer. Another gas which can be used for δ33S and δ34S analysis by negative ion mass spectrometry is SF6 on mass spectrum of SF5- ions.
www.wydawnictwo.umcs.lublin.pl
2016-04-29 12:28:35
application/pdf
https://journals.umcs.pl/aaa/article/view/2317
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 70 (2015)
eng
Prawa autorskie (c) 2016 Stanisław Hałas, Tomasz Pieńkos, Andrzej Pelc, Artur Wójtowicz
oai:ojs.umcsd.home.net.pl:article/2255
2016-04-29T10:28:35Z
aaa:ART
"160429 2016 eng "
0137-6861
dc
Scattering of massive Dirac particles by a Kink-like potential
Ikot, Akpan
Department of Physics, University of Port Harcourt
Obong, H. P.
Department of Physics, University of Port Harcourt
Hassanabadi, H.
Physics Department, University of Shahrood, Shahrood
Abbey, T. M.
Department of Physics, University of Port Harcourt
Zarrinkamar, S.
Department of Basic Sciences, Garmsar Branch, Islamic Azad University, Garmsar
Dirac equation; Kink-like potential; scattering state
The scattering state of spin ½ particles with Kink-like potential is studied under the massive Dirac equation. We obtain the scattering states in terms of the hypergeometric functions and calculate the reflection coefficient (R) and transmission coefficient (T).
www.wydawnictwo.umcs.lublin.pl
2016-04-29 12:28:35
application/pdf
https://journals.umcs.pl/aaa/article/view/2255
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 70 (2015)
eng
Prawa autorskie (c) 2016 Akpan Ikot, H. P. Obong, H. Hassanabadi, T. M. Abbey, S. Zarrinkamar
oai:ojs.umcsd.home.net.pl:article/2241
2016-04-29T10:28:35Z
aaa:REV
"160429 2016 eng "
0137-6861
dc
J. Burchart & J. Kráĺ – Izotopowy zapis przeszłości Ziemi. Wyd. Uniw. Marii Curie-Skłodowskiej, Lublin 2015, 70 ryc., 299 str.
Migaszewski, Zdzisław
Uniwersytet Jana Kochanowskiego
www.wydawnictwo.umcs.lublin.pl
2016-04-29 12:28:35
application/pdf
https://journals.umcs.pl/aaa/article/view/2241
Annales Universitatis Mariae Curie-Sklodowska, sectio AAA – Physica; Vol 70 (2015)
eng
Prawa autorskie (c) 2016 Zdzisław Migaszewski