Seniority and (9/2)^(n) configurations in neutron-rich Nickel isotopes

作     者：S.Sidorov D.Zhulyaeva T.Tretyakova 

作者机构：Faculty of PhysicsLomonosov Moscow State UniversityMoscow 119991Rusia Skobeltsyn Institute of Nuelear Physicso Moscow State UniversityMoscow 119991Rssia 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2022年第46卷第7期

页      面：103-111页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：Supported by the Interdisciplinary Scientific and Educational School of Moscow University"Fundamental and Applied Space Research" 

主　　题：shell model nucleon pairing seniority scheme neutron-rich isotopes 

摘      要：Excited states in low-energy spectra of ^(70-76) Ni are considered. Accordingly, pairing forces in the form of surface delta interaction are employed to account for the formation of the ground state multiplet with seniority v= 2 states. The multiplet splitting is described with mass relationships of masses of neighboring nuclei. Subsequently, the seniority model is adopted to reproduce or predict the states v= 3 in odd-even isotopes and v= 4 in even-even isotopes. The correct account of the 2^(+)_(1) state should allow for the description of the reversed order of J = 4 states with v= 2 and v= 4 observed in experiments. The results obtained are compared with the structure of similar multiplets in N=50 isotones.