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Atomic screening and e+e− pair photoproduction at low energies. / Krachkov, P. A.; Milstein, A. I.
в: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Том 846, 138224, 10.11.2023.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Atomic screening and e+e− pair photoproduction at low energies
AU - Krachkov, P. A.
AU - Milstein, A. I.
PY - 2023/11/10
Y1 - 2023/11/10
N2 - The effect of screening by atomic electrons on the behavior of electron and positron wave functions in the continuous spectrum at small distances is studied. It is shown that these asymptotics are affected not only by the static potential of atomic electrons, but also by the polarization potential, as well as by the exchange interaction, which is essential for nonrelativistic electrons. A simple analytical expression is obtained for the photoproduction cross section of e+e− pair in an atomic field near the threshold. The spectrum and angular distribution of the produced particles are considered. It is shown that screening significantly affects the cross section in the near-threshold region.
AB - The effect of screening by atomic electrons on the behavior of electron and positron wave functions in the continuous spectrum at small distances is studied. It is shown that these asymptotics are affected not only by the static potential of atomic electrons, but also by the polarization potential, as well as by the exchange interaction, which is essential for nonrelativistic electrons. A simple analytical expression is obtained for the photoproduction cross section of e+e− pair in an atomic field near the threshold. The spectrum and angular distribution of the produced particles are considered. It is shown that screening significantly affects the cross section in the near-threshold region.
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85173495037&origin=inward&txGid=8e78d4e1ccbda653579c6aeb7e2e5c15
UR - https://www.mendeley.com/catalogue/1ce1a422-4e30-3c64-9849-72604b47f17a/
U2 - 10.1016/j.physletb.2023.138224
DO - 10.1016/j.physletb.2023.138224
M3 - Article
VL - 846
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
M1 - 138224
ER -
ID: 59285606