Nuclear structure of [sup.76]Ge from proton-neutron interacting boson model calculations

The properties of low-lying states in [sup.76]Ge, especially the characteristics of the mixed-symmetry states, have been investigated within the neutron-proton interacting boson model (IBM-2). By considering the relative energy of d proton boson to be different from that of neutron boson, the low-ly...

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Bibliographic Details
Published in:Science China. Physics, mechanics & astronomy mechanics & astronomy, 2018-01, Vol.61 (1)
Main Authors: Zhang, DaLi, Mu, ChengFu
Format: Article
Language:English
Online Access:Get full text
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Summary:The properties of low-lying states in [sup.76]Ge, especially the characteristics of the mixed-symmetry states, have been investigated within the neutron-proton interacting boson model (IBM-2). By considering the relative energy of d proton boson to be different from that of neutron boson, the low-lying positive parity levels and M1, E2 transition strengths have been calculated. The IBM-2 calculated results are in good agreement with the experimental data. Particularly, the mixed-symmetry states have been reproduced quite well. The calculation and systematic analysis demonstrated that the collective character of [sup.76]Ge lies closest to the S[U.sup.*.sub.[pi]v](3), with some possible [O.sub.[pi]v] (6) dynamic symmetry in IBM-2 viewpoint. [sup.76]Ge, energy levels, E2 and M1 transition strengths, IBM-2 PACS number(s): 21.10.Re, 21.60.Fw, 27.60.+j
ISSN:1674-7348
DOI:10.1007/s11433-017-9090-y