Zobrazeno 1 - 10
of 312
pro vyhledávání: '"Atomic shell"'
Autor:
S. N. Fedotkin
Publikováno v:
Âderna Fìzika ta Energetika, Vol 21, Iss 1, Pp 5-12 (2020)
An approximate method for calculating the probability of single-photon annihilation of a positron with an atomic electron at the β+-decay averaged over all electrons of the daughter atom is proposed. The electrons are described in the framework of t
Externí odkaz:
https://doaj.org/article/d2bd0b0fdfec443196ef4403affd7d6e
Autor:
S. N. Fedotkin
Publikováno v:
Âderna Fìzika ta Energetika, Vol 17, Iss 3, Pp 226-231 (2016)
Simple approximate method for calculation of the cross sections of the photoeffect averaged over all atomic electrons is suggested. This method is based on the statistical Thomas - Fermi model with a new additional assumption. The proposed approach a
Externí odkaz:
https://doaj.org/article/7362ceca63a54ee6b0feeec42ff134be
Akademický článek
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Autor:
S. N. Fedotkin
Publikováno v:
Âderna Fìzika ta Energetika, Vol 15, Iss 4, Pp 329-333 (2014)
The process of atomic shell ionization during annihilation of positron, emitted at β+-decay, with K-electron of daughter's atom is considered. The role of nuclear Coulomb field at calculation of the probability of this process is investigated. It is
Externí odkaz:
https://doaj.org/article/6a3698ddc5df4901b3b8e9a6db0d54f9
Autor:
S. N. Fedotkin
Publikováno v:
Âderna Fìzika ta Energetika, Vol 13, Iss 3, Pp 223-227 (2012)
The role of the nuclear charge screening and correctness of Born approximation for electron which is leaving atom in the process of atomic ionization at annihilation of positron with another electron of daughter's atom at β+-decay is studied. Proc
Externí odkaz:
https://doaj.org/article/3e54bee945954852bda636c966b4d374
Autor:
S. N. Fedotkin
Publikováno v:
Âderna Fìzika ta Energetika, Vol 12, Iss 4, Pp 335-338 (2011)
Atomic ionization at annihilation of positron with another electron of daughter's atom at +-decay is studied. Processes of the different atomic shells ionization at annihilation of positron, emitted at +-decay, with K-electron of daughter's ato
Externí odkaz:
https://doaj.org/article/6218f1e902ba4f98bd753d80595d1c64
Autor:
S. M. Fedotkin
Publikováno v:
Âderna Fìzika ta Energetika, Vol 11, Iss 3, Pp 233-238 (2010)
The processes of photon creation or atom ionization during annihilation of positron with other electron of daughter’s atom at β+-decay are considered. The estimations for the probability of one photon annihilation emitted in the process β+-decay
Externí odkaz:
https://doaj.org/article/381a7fb1c8914524ab096a0e7d069d99
Autor:
V. M. Kolomietz, S. N. Fedotkin
Publikováno v:
Âderna Fìzika ta Energetika, Vol 10, Iss 2, Pp 123-127 (2009)
General expressions for the probabilities of the atomic shell ionization and e+e- -pairs creation at the “heated” nuclei are found. The spectral distributions of the positrons and conversion electrons are investigated in the case of the nuclear E
Externí odkaz:
https://doaj.org/article/ba0ba2edea2d4d6ca89db7065c9a06c5
Publikováno v:
Nanomaterials
Volume 11
Issue 1
Nanomaterials, Vol 11, Iss 122, p 122 (2021)
Dipòsit Digital de la UB
Universidad de Barcelona
Volume 11
Issue 1
Nanomaterials, Vol 11, Iss 122, p 122 (2021)
Dipòsit Digital de la UB
Universidad de Barcelona
Structure of model bimetallic PdAu nanoparticles is analyzed aiming to find Pd:Au ratios optimal for existence of Pd1 single-atom surface sites inside outer Au atomic shell. The analysis is performed using density-functional theory (DFT) calculations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f91852d1019b683183efb2f184341676
http://hdl.handle.net/2445/174819
http://hdl.handle.net/2445/174819
Transformation of glasses into liquids is discussed in terms of configuron (broken chemical bond or transformation of an atom from one to another atomic shell) percolation theory with structural changes caused. The first sharp diffraction minimum (FS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f475f3a94f5ee9e5325c5bd1b8c56c4e
http://hdl.handle.net/10044/1/78514
http://hdl.handle.net/10044/1/78514