https://doi.org/10.1140/epja/i2018-12449-x
Regular Article - Theoretical Physics
Evolution of single-particle structure of silicon isotopes
1
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, GSP-1, Leninskie gory 1(2), 119991, Moscow, Russia
2
Faculty of Physics, Lomonosov Moscow State University, GSP-1, Leninskie gory 1(2), 119991, Moscow, Russia
* e-mail: tretyakova@sinp.msu.ru
Received:
5
August
2017
Accepted:
20
December
2017
Published online:
19
January
2018
New data on proton and neutron single-particle energies 
of Si isotopes with neutron number N from 12 to 28 as well as occupation probabilities 
of single-particle states of stable isotopes 28, 30Si near the Fermi energy were obtained by the joint evaluation of the stripping and pick-up reaction data and excited state decay schemes of neighboring nuclei. The evaluated data indicate the following features of single-particle structure evolution: persistence of Z = 14 subshell closure with N increase, the new magicity of the number N = 16, and the conservation of the magic properties of the number N = 20 in Si isotopic chain. The features were described by the dispersive optical model. The calculation also predicts the weakening of N = 28 shell closure and demonstrates evolution of a bubble-like structure of the proton density distributions in neutron-rich Si isotopes.
© SIF, Springer-Verlag GmbH Germany, part of Springer Nature, 2018
