1ST INFORMATION ABOUT THE LEVEL STRUCTURE OF RU-91

被引：17

作者：

ARNELL, SE

FOLTESCU, D

ROTH, HA

SKEPPSTEDT, O

NILSSON, A

MITARAI, S

NYBERG, J

机构：

[1] MANNE SIEGBAHN INST,S-10405 STOCKHOLM,SWEDEN

[2] KYUSHU UNIV,DEPT PHYS,FUKUOKA 812,JAPAN

[3] NIELS BOHR INST,DK-4000 ROSKILDE,DENMARK

来源：

PHYSICA SCRIPTA | 1993年 / 47卷 / 03期

关键词：

D O I：

10.1088/0031-8949/47/3/005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The present work presents, for the first time, the yrast level scheme of Ru-91. The level structure was investigated via the fusion-evaporation reaction Ni-58(Ca-40, alpha2pn)Ru-91 at beam energies of 187 MeV using in-beam gamma-ray spectroscopy techniques. The NORDBALL detector system including charged particle and neutron selection was used. The decay scheme was constructed on the basis of Compton suppressed gammagamma coincidences, intensity relations and measured gamma-ray anisotropies. A number of positive as well as negative parity yrast levels was found with excitation energies up to 7.5 MeV and 9.6 MeV with maximum spin values of (41/2+) and at least 45/2- respectively. The experimental results are discussed in terms of shell-model configurations and the systematics of the structure of the nug9/2(-3) configuration.

引用

页码：355 / 358

页数：4

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