Gamma Ray Decay Schemes of Levels at Intermediate Energies in 32S

Abstract

The reaction 32S(p,p'y)32S has been studied with a 12'7 cm by 10·2 cm NaI(TI) y-ray detector in conjunction with a 61 cm double-focusing magnetic spectrometer to determine the y-ray decay schemes of all known levels in 32S between the excitation energies of 5·40 and 7· 15 MeV.

Spin?Parity Combinations in 32S

“…The spin-parity combinations obtained are consistent with those spins and parities that are well established. The newly discovered 6581 keY state decays predominantly by y-ray transitions to the 2230 keY 2+ state, while decay schemes for the other states have been discussed in detail by Moss et al (1973). The 7004 keY level was not observed in any of the inelastic a-particle data, which is consistent with a T = 1 assignment for the level and the effective operation of isospin selection rules.…”

“…Clearly the existence of a ground state transition would be inconsistent with a 5-assignment. Moss et al (1973) found that the 6762 keY level decays 100% to the 5007 keY r state and <26% to the 4459 keY 4+ state. However, their upper limit of 5 % for a ground state branch is not inconsistent with the result of Coetzee et al It is highly desirable that the possible existence of this ground-state branch should be clarified.…”

“…Recently Moss et al (1973) reviewed the experimental information concerning the characteristics of levels in 32S within the range of excitation energies Ex from ~ 5-8 MeV. They indicated where firm spin and parity assignments were needed to permit more rigorous evaluation of the various nuclear models applicable to levels in this region.…”