γ–γ ANGULAR CORRELATION MEASUREMENTS OF THERMAL-NEUTRON-CAPTURE γ RAYS IN ⁵³Cr AND ⁵⁴Cr

Abstract

Coincidence and angular correlation measurements have been made on γ rays following thermal-neutron capture in separated targets of 52 Cr and 53 Cr. The following spin assignments are made in 53 Cr: 0.563-, 2.32-, 2.71-, and 3.62-MeV levels, 1/2, 3/2, 1/2, and (3/2) respectively, and in 54 Cr: 2.63-, 2.84-, 3.08-, 3.73-, 4.91-, and 5.30-MeV levels, 2,(0)2, 2, 1 or 2, 1 or 2, and 1, 2, or 3 respectively. Details of the decay schemes, branching ratios, and γ-ray multipole mixtures are given also.