A smoothly terminating rotational band in 64Zn

被引：38

作者：

Galindo-Uribarri, A

Ward, D

Ball, GC

Janzen, VP

Radford, DC

Ragnarsson, I

Headly, D

机构：

[1] AECL Res, Chalk River Labs, Chalk River, ON K0J 1J0, Canada

[2] Univ Lund, Dept Math Phys, S-22100 Lund, Sweden

[3] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA

来源：

PHYSICS LETTERS B | 1998年 / 422卷 / 1-4期

关键词：

D O I：

10.1016/S0370-2693(97)01541-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A rotational band has been discovered in the nucleus Zn-64; it extends from spin (12 (h) over bar) to spin (24 (h) over bar), and exhibits strong dipole transitions between its signature partners. In our interpretation, Zn-64 takes on triaxial deformation (epsilon similar to-0.3 gamma similar to 30 degrees) at intermediate spin when an f(7/2) proton is promoted across the spherical shell-gap at Z = 28 to the g(9/2) orbital. The situation is parallel to that occurring in the smooth terminating bands in the Sn and Sb isotopes at the Z = 50 shell-gap. The band in Zn-64 is the first example of a collective band approaching termination in the mass A similar to 60 region. Crown Copyright (C) 1998 Published by Elsevier Science B.V.

引用

页码：45 / 51

页数：7

共 16 条

[1] GRADUAL LOSS OF COLLECTIVITY IN ROTATIONAL BANDS IN THE A-SIMILAR-TO-110 (Z-GREATER-THAN-OR-EQUAL-TO-50,N-SIMILAR-TO-60) MASS REGION [J].