Coexistence or strong-mixing of intruder 0/sup +/ states in even-even Zr nuclei

Journal Article · Mon Aug 01 04:00:00 EDT 1988 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.38.984· OSTI ID:6967677

Heyde, K; Kirchuk, E D; Federman, P

In even-even Zr nuclei, with the neutron number increasing from N = 56 on, a steady lowering of the first excited 0/sup +/ state is observed. This excited 0/sup +/ state has been mainly related to the proton excitation across the Z = 40 subshell. Starting from the shell-model matrix element, connecting the (2p/sub 1/2/)/sup 2/0/sup +/ and (1g/sub 9/2/)/sup 2/0/sup +/ configurations in /sup 90/Zr, we point out that a large reduction in the coupling matrix element is needed to explain the very low 0/sup +/ excitation energy at N = 58, N = 60. This reduction is calculated, starting from the matrix element connecting the spherical valence neutron configuration and a Nilsson model deformed wave function describing the neutron component.

• Research Organization: Institute for Nuclear Physics, B-9000 Gent, Belgium
• OSTI ID: 6967677
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 38:2; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

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EVEN-EVEN NUCLEI
EXCITED STATES
ISOTOPES
MANY-BODY PROBLEM
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