A doublet resonance in the reaction 32S([varrho], [gamma])33Cl

Abstract

Gamma-ray spectra, yields, and angular distributions have been measured with scintillation spectrometers at two resonances in the reaction 32S(, γ)33Cl, at 579.8 ± 1.5 keV and 587.4 ± 1.5 keV. The 580 keV resonance corresponds to a 2.85 ± 0.02 MeV level in 33Cl to which J = 5/2+ is assigned. This level decays almost exclusively to the ground state. The 587 keV resonance corresponds to a 2.86 ± 0.02 MeV level in 33Cl with spin J 3/2, which decays with approximately equal intensities to the ground state and to the first excited state at 0.806 ± 0.004 MeV. A 33Cl mass excess of − 11.244 ± 0.011 MeV results from these experiments. The resonance strengths amount to γ = 4.5 meV for the 580 keV resonance, and to γ = 26 ± 10 meV for the 587 keV resonance. A search for the conjugate state of the 2.94 MeV level in 33S, with J = 7/2−, was unsuccesful.