Different particle alignments in N≈Z Ru isotopes studied by the shell model -: art. no. 034324

被引：16

作者：

Hasegawa, M ^{[1
]}

Kaneko, K

Mizusaki, T

Tazaki, S

机构：

[1] Fukuoka Dent Coll, Phys Lab, Fukuoka 8140193, Japan

[2] Kyushu Sangyo Univ, Dept Phys, Fukuoka 8138503, Japan

[3] Senshu Univ, Inst Nat Sci, Kanagawa 2148580, Japan

[4] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

[5] Fukuoka Univ, Dept Appl Phys, Fukuoka 8140180, Japan

来源：

PHYSICAL REVIEW C | 2004年 / 69卷 / 03期

关键词：

D O I：

10.1103/PhysRevC.69.034324

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Experimentally observed heaviest Napproximate toZ nuclei, Ru isotopes, are investigated by the shell model on a spherical basis with the extended P+QQ Hamiltonian. The energy levels of all the Ru isotopes can be explained by the shell model with a single set of force parameters. The calculations indicate an enhancement of quadrupole correlations in the N=Z nucleus Ru-88 as compared with the other Ru isotopes, but the observed moments of inertia seem to require much more enhancement of quadrupole correlations in Ru-88. It is discussed that the particle alignment takes place at 8(+) in Ru-90 but is delayed in Ru-88 till 16(+) where the simultaneous alignments of proton and neutron pairs take place. The calculations present interesting predictions for Ru-89 that the ground state is the 1/2(-) state and there are three DeltaJ=2 bands with different particle alignments including the T=0 p-n pair alignment.

引用

页码：034324 / 1

页数：11

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