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This article is cited in 3 scientific papers (total in 3 papers)
FIELDS, PARTICLES, AND NUCLEI
Phonon-particle coupling effects in odd-even mass differences of semi-magic nuclei
E. E. Sapershteinab, M. Baldoc, S. S. Pankratovdb, S. V. Tolokonnikovdb a National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia
b National Research Center Kurchatov Institute, Moscow, Russia
c INFN, Sezione di Catania, Catania, Italy
d Moscow Institute of Physics and Technology (State University), Dolgoprudnyi, Moscow region, Russia
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$^+_1$ and 3$^-_1$ significantly diminishes the deviation of the theory from the data till 0.218 MeV.
Received: 02.10.2017 Revised: 12.10.2017
Citation:
E. E. Sapershtein, M. Baldo, S. S. Pankratov, S. V. Tolokonnikov, “Phonon-particle coupling effects in odd-even mass differences of semi-magic nuclei”, Pis'ma v Zh. Èksper. Teoret. Fiz., 106:9 (2017), 539–544; JETP Letters, 106:9 (2017), 555–560
Linking options:
https://www.mathnet.ru/eng/jetpl5405 https://www.mathnet.ru/eng/jetpl/v106/i9/p539
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