Proton-neutron symplectic model description of ^(20)Ne  

作　　者：H.G.Ganev 

机构地区：[1]Joint Institute for Nuclear Research,Dubna,Russia

出　　处：《Chinese Physics C》2022年第4期141-149,共9页中国物理C（英文版）

摘　　要：A microscopic description of the low-lying positive-parity rotational bands in ^(20)Ne is given within the framework of the symplectic-based proton-neutron shell-model approach provided by the proton-neutron symplectic model(PNSM).For this purpose,a model Hamiltonian is adopted.This includes an algebraic interaction lying in the enveloping algebra of the Sp(12,R)dynamical group of the PNSM,which introduces both horizontal and vertical mixings of different SU(3)irreducible representations within the Sp(12,R)irreducible collective space of ^(20)Ne.A good overall description is obtained for the excitation energies of the ground and first two excited β bands,including the ground state intraband B(E2)quadrupole collectivity and the known interband B(E2)transition probabilities between the low-lying collective states,without utilizing an effective charge.

关 键 词：proton-neutron symplectic model shell-model states collective states in^(20)Ne 

分 类 号：O571[理学—粒子物理与原子核物理]