Isomeric states in neutron-rich 129In and the πg−19/2 ⊗ vh−111/2 multiplet

J Taprogge,A Jungclaus,G Simpson

doi:10.1088/1742-6596/533/1/012043

Abstract

Within the RISING stopped beam campaign the neutron-rich indium isotopes with masses A=125-130 have been studied using the method of isomer spectroscopy. The decays of several isomeric states have been observed and here we compare our results for 129In to previous measurements for this nucleus. The isomeric states were populated in the fragmentation of a 136Xe beam at 750 MeV/u and in the relativistic fission of a 238U beam at 650 MeV/u at the accelerator facility GSI (Darmstadt, Germany).

Highlights

In the last decade a large number of theoretical studies and experiments have been performed to investigate the region around the doubly magic 132Sn
In 129In, several isomeric states were known previous to this work
Fogelberg et al [8] identified two ms isomeric states, which are connected by a 281-keV transition, and assigned spin/parity of (29/2+) and (23/2−) to the higher and lower isomeric state, respectively

Summary

Introduction

In the last decade a large number of theoretical studies and experiments have been performed to investigate the region around the doubly magic 132Sn. Results are presented for isomeric states in neutron-rich indium nuclei. Information on isomeric states in neutron-rich Ag, Cd, In and Sn isotopes, deduced from the same dataset, have already been presented in Refs.

Results

Conclusion