Gamma-ray spectroscopy of Rb-79 and Sr-81

被引：13

作者：

Smalley, DH

Chapman, R

Dagnall, PJ

Finck, C

Haas, B

Leddy, MJ

Lisle, JC

Prevost, D

Savajols, H

Smith, AG

机构：

[1] UNIV PAISLEY,DEPT PHYS,PAISLEY PA1 2BE,RENFREW,SCOTLAND

[2] UNIV STRASBOURG 1,CTR RECH NUCL,CNRS,IN2P3,F-67037 STRASBOURG,FRANCE

来源：

NUCLEAR PHYSICS A | 1996年 / 611卷 / 01期

关键词：

Ni-58(Si-30; alpha; 2pn); 2 alpha p); E(beam)=134; MeV; measured gamma gamma-coin; Rb-79 and Sr-81 deduced levels; TRS calculations; Routhians; alignments; cranked shell model calculations;

D O I：

10.1016/S0375-9474(96)00286-2

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：

High spin states in Rb-79 and Sr-81 were populated through the bombardment of a Ni-58 target with a Si-30 beam at 134 MeV. Gamma rays depopulating the excited states were detected using the EUROGAM phase-2 array. A band of nine transitions has been observed in Sr-81 decaying to the alpha = -1/2 sequence built on the [303] 5/2(-) Nilsson orbit. The decay schemes of several bands in both Rb-79 and Sr-81 have been extended to higher spin with angular correlation measurements providing firm spin assignments for a number of states. A fork is observed in Rb-79 after a band crossing at <h(omega)over bar> similar or equal to 0.72 MeV in the alpha = +1/2 sequence built on the [312]3/2(-) Nilsson orbit. A previously observed cascade of three gamma-rays in Rb-79 has been extended by the addition of ten transitions up to 16 MeV. This has been assigned as a positive parity band built on the [440]1/2(+) Nilsson orbit.

引用

页码：96 / 123

页数：28

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