Decay of152Pm to Levels of152Sm

15 July 1977

journal article
Published by Physical Society of Japan in Journal of the Physics Society Japan

Vol. 43 (1) , 8-16
https://doi.org/10.1143/jpsj.43.8

Abstract

A spectroscopic study of the decay of ¹⁵²Pm to the levels of ¹⁵²Sm was performed by using Ge(Li), NaI(Tl) and plastic detectors. The radioactive sources were produced from the (n, p) reaction with 14.8 MeV neutrons on enriched samarium targets. The half-lives of two ¹⁵²Pm isomers are 4.30±0.37 and 7.52±0.08 min. One hundred and twenty-nine γ-rays, including 96 new ones, were observed and 108 of them are assigned to the decay schemes for ¹⁵²Pm including 22 new levels. An observed Q _β value for the 4.30 min ¹⁵²Pm was 3.50±0.10 MeV. Most probable spin assignments of 1 ⁺ and 4 ^- are proposed for the 4.30 and 7.52 min ¹⁵²Pm, respectively. The results are discussed in terms of the unified model.

Keywords

This publication has 1 reference indexed in Scilit:

Table of Isotopes, 6th ed.
Physics Today, 1967