Many-particle many-hole states near the magic number 20: deformed and superdeformed states

2004/04/16 by Samit Bhowal, Bhowal, Samit, Sankha Das +3
Physics and Astronomy · #FOS: Physical sciences #Nuclear Theory (nucl-th) #nucl-th

paper · pdf · doi:10.48550/arxiv.nucl-th/0404043

1 figure

arxiv created 2004/04/16 · arxiv updated 2009/12/01

Abstract

Many-particle many-hole states near the magic number 20 have been investigated in the relativistic mean field formalism using the fixed configuration method. Neutron particle-hole states in neutron-rich nuclei with N∼ 20, \em i.e. ^30,32,34Mg,and ^28,30Ne are studied to find out the ground state configuration. The ground state of ³²Ne,Mg as well as possibly ³⁴Mg comes out actually as particle-hole states. Proton-neutron excitation across the shell gap at 20 in nuclei with N=Z, \em i.e. ³²S, ³⁶Ar, ⁴⁰Ca and ⁴⁴Ti is investigated as possible origins of superdeformed configuration. Observed superdeformed bands in ³⁶Ar and ⁴⁰Ca can be described as many-particle many-hole states.

Related

• Structural properties of nuclei with semi-magic number N(Z)=40
• Particle-Hole Multiplets Near Closed Shells
• A systematic study of neutron magic nuclei withN= 8, 20, 28, 50, 82 and 126 in the relativistic mean-field theory
• Evolution of shell structure at N=32 and 34: Insights from realistic nuclear forces
• Superheavy Magic Nuclei: Ground-State Properties, Bubble Structure and α-Decay Chains