Phonon–particle coupling effects in odd–even double mass differences of magic nuclei
- Авторы: Saperstein E.E.1,2, Baldo M.3, Gnezdilov N.V.4, Tolokonnikov S.V.1,5
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Учреждения:
- National Research Centre Kurchatov Institute
- National Research Nuclear University MEPhI
- INFN
- Instituut-Lorentz
- Moscow Institute of Physics and Technology (State University)
- Выпуск: Том 103, № 1 (2016)
- Страницы: 1-7
- Раздел: Fields, Particles, and Nuclei
- URL: https://journals.rcsi.science/0021-3640/article/view/158928
- DOI: https://doi.org/10.1134/S0021364016010124
- ID: 158928
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Аннотация
A method is developed to consider the particle–phonon coupling (PC) effects in the problem of finding odd–even double mass differences (DMD) of magic nuclei within the approach starting from the free NN potential. Three PC effects are taken into account, the phonon induced interaction, the renormalization of the “ends” due to the Z-factors and the change of the single-particle energies. We use the perturbation theory in gL2, where gL is the vertex of the L-phonon creation. PC corrections to single-particle energies are found selfconsistently. In addition to the usual pole diagram, the phonon “tadpole” diagram is taken into account approximately. Results for double-magic 132Sn and 208Pb nuclei show that the PC corrections make agreement with the experimental data better.
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Об авторах
E. Saperstein
National Research Centre Kurchatov Institute; National Research Nuclear University MEPhI
Автор, ответственный за переписку.
Email: saper@mbslab.kiae.ru
Россия, Moscow, 123182; Moscow, 115409
M. Baldo
INFN
Email: saper@mbslab.kiae.ru
Италия, Catania, I-95125
N. Gnezdilov
Instituut-Lorentz
Email: saper@mbslab.kiae.ru
Нидерланды, Leiden, RA, 2300
S. Tolokonnikov
National Research Centre Kurchatov Institute; Moscow Institute of Physics and Technology (State University)
Email: saper@mbslab.kiae.ru
Россия, Moscow, 123182; Dolgoprudnyi, Moscow region, 141700
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