Isobaric Analogue State of the 0.211 MeV Level of Mn⁵⁶ in Fe⁵⁶

Abstract

Gamma-ray spectrum from the reaction Mn55(p, y ) FeS6 at the isobaric analogue resonance a t E, = 1537 4keV has beenmeasuredwith a 15 cm8 Ge(Li) detector. Double and triple angular correlations at this resonance state have been measured. Proton elastic scattering was studied also a t this resonance at the angles 135" and 150". Analysis of these data yields a spin and parity assignment 2+, proton radiative width 2 f 0.2 keV and total width 9 keV to this resonance state which is the isobaric analogue of the third excited state of MnS6 at excitation energy 0.211 MeV.