Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Vadim K. Ivanov"'
Publikováno v:
Atoms, Vol 11, Iss 2, p 18 (2023)
The late Professor Miron Amusia was a key figure in theoretical atomic physics on the international stage for more than five decades [...]
Externí odkaz:
https://doaj.org/article/6dd35d98552b461aae98f68e4f07cf96
Publikováno v:
Atoms, Vol 10, Iss 2, p 52 (2022)
The article is devoted to a brief description of the ATOM computer program system, designed to study the structure, transition probabilities and cross sections of various processes in multielectron atoms. The theoretical study was based on the concep
Externí odkaz:
https://doaj.org/article/5e688179e6254d5baf9b8b3c70e662db
Publikováno v:
The European Physical Journal D. 72
The model pseudopotentials of C60−, C60 and C60+ have been constructed on the base of the total electrostatic potentials obtained as a result of ab initio-based calculations. The radial distance dependence of the pseudopotential is obtained by aver
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83ef1ea9abbf1a151191b5d0418c9e30
https://doi.org/10.1140/epjd/e2018-90229-1
https://doi.org/10.1140/epjd/e2018-90229-1
We predict peculiar changes in spectral distributions of radiation emitted by ultra-relativistic positrons and electrons in periodically bent crystals with variation of the bending amplitude. It is shown that the changes, being sensitive to the proje
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2db5f3303479fbb5e9704061b115e691
Publikováno v:
Journal of Experimental and Theoretical Physics. 117:631-635
The total energy of electrically neutral electron-positron clusters with closed shells containing different numbers of pairs has been calculated. The inclusion of multiparticle correlations in the random phase approximation with exchange has allowed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7dfea153a55100912c3119e472dfd63a
https://doi.org/10.1134/s1063776113120133
https://doi.org/10.1134/s1063776113120133
An anion C- 60 pseudopotential is determined from an ab-initio-based approach. First, ab-initio calculations are performed to calculate the electronic charge density and the total electrostatic potential. Second, the effective dependence of the pseud
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::391f5118e8f26214aa6334d8cbf45412
http://arxiv.org/abs/1512.04841
http://arxiv.org/abs/1512.04841
Autor:
Vadim K. Ivanov, Natalia O. Vasetskaya
Publikováno v:
Technical Physics Letters. 35:170-173
The probabilities and energies of Auger transitions in doubly excited 3li3lj, 3li4lj, and 4li4lj states of oxygen, carbon, and nitrogen ions have been calculated using the Hartree-Fock approximation. The emission spectra are determined and changes in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::986f72237916685c5df79d0eb39ebc6f
https://doi.org/10.1134/s1063785009020217
https://doi.org/10.1134/s1063785009020217
Autor:
Vadim K. Ivanov, Andrey V. Solov’yov, A. S. Tiukanov, Roman G. Polozkov, Walter Greiner, Andrey K. Belyaev
Publikováno v:
International Journal of Quantum Chemistry. 107:2781-2786
The photoionization cross sections of the fullerene positive ions C and C are calculated within the photon energy range from the ionization thresholds up to 80 eV and compared with the recent experimental data (Scally et al., Phys Rev Lett 2005, 94,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3208ec8e024c0395c11bd934ad73df54
https://doi.org/10.1002/qua.21435
https://doi.org/10.1002/qua.21435
Autor:
G Yu Kashenock, Vadim K. Ivanov
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 39:1379-1393
The near-threshold strong resonance in 1s inner-shell photodetachment of the carbon negative ion is investigated and the role of collective effects in its formation is evaluated. The shape resonance parameters, the resonance energy of eres = 0.857 eV
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71498251b608c99343798b202e95a2ba
https://doi.org/10.1088/0953-4075/39/6/010
https://doi.org/10.1088/0953-4075/39/6/010
Autor:
Vadim K. Ivanov
Publikováno v:
Radiation Physics and Chemistry. 70:345-370
A short survey of the model and ab initio many electron approaches applied to the study of negative ion photodetachment is presented. Primarily, attention is paid to the manifestation of dynamic many electron effects such as interference between diff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba3adf0024f497f2ce30a119cfd469f1
https://doi.org/10.1016/j.radphyschem.2003.12.020
https://doi.org/10.1016/j.radphyschem.2003.12.020