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- Title
Phonon-particle coupling effects in odd-even mass differences of semi-magic nuclei.
- Authors
Saperstein, E.; Baldo, M.; Pankratov, S.; Tolokonnikov, S.
- Abstract
A method to evaluate the particle-phonon coupling (PC) corrections to the single-particle energies in semi-magic nuclei, based on a direct solving the Dyson equation with PC corrected mass operator, is used for finding the odd-even mass difference between 18 even Pb isotopes and their odd-proton neighbors. The Fayans energy density functional (EDF) DF3-a is used which gives rather high accuracy of the predictions for these mass differences already on the mean-field level, with the average deviation from the existing experimental data equal to 0.389 MeV. It is only a bit worse than the corresponding value of 0.333 MeV for the Skyrme EDF HFB-17, which belongs to a family of Skyrme EDFs with the highest overall accuracy in describing the nuclear masses. Account for the PC corrections induced by the low-laying phonons 2 and 3 significantly diminishes the deviation of the theory from the data till 0.218 MeV.
- Subjects
PHONONS; DENSITY functionals; ATOMIC mass; MAGNETIC coupling; SKYRME model
- Publication
JETP Letters, 2017, Vol 106, Issue 9, p555
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S0021364017210032