182Pt as a possible candidate for X(5) symmetry

被引：5

作者：

Petkov, P. ^{[1
]}

Gladnsihki, K. A. ^{[2
]}

Dewald, A. ^{[3
]}

Fransen, C. ^{[3
]}

Hackstein, M. ^{[3
]}

Jolie, J. ^{[3
]}

Pissulla, Th ^{[3
]}

Rother, W. ^{[3
]}

Zell, K. O. ^{[3
]}

机构：

[1] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, 72 Tzarigradsko Chaussee Blvd, BU-1784 Sofia, Bulgaria

[2] Hals Nasen Ohren Klin, Fac Phys, Sofia, Bulgaria

[3] Univ Cologne, Inst Phys, D-50937 Cologne, Germany

来源：

XIX INTERNATIONAL SCHOOL ON NUCLEAR PHYSICS, NEUTRON PHYSICS AND APPLICATIONS (VARNA 2011) | 2012年 / 366卷

关键词：

DECAY CURVE METHOD; BAND; PLUNGER; SHAPE;

D O I：

10.1088/1742-6596/366/1/012036

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：

Recently, a new island of X(5) nuclei has been suggested around A = 180 exemplified by some Osmium isotopes. To investigate the limits of its region, a Recoil-distance Doppler shift lifetime measurement has been performed for Pt-182. For the data analysis, the Differential decay curve method has been applied in a newly developed version convenient for low recoil velocities and a non-negligible fraction of nuclei stopped already in the target. The level energies and the newly deduced transition quadrupole moments in the yrast band reveal the persistence of X(5) features in the investigated nucleus, but other spectroscopic data and IBM and GCM calculations indicate shape coexistence and a position of Pt-182 close but not at the critical point of the shape-transition.

引用

页数：5

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