Odd parity levels excited in the 37Cl(p,γ)38Ar reaction

Abstract

From angular correlation and polarization measurements performed at two resonances in the 37Cl(p, γ)38Ar reaction, the spins and parties of levels at 4.49, 4.60, 5.67, 11.30 and 11.31 MeV have been determined to be Jπ = 4−, 5−, 5−, 5− and 5−, respectively. The two high-energy states are very probably the (split) analogue of the first excited state in 38Cl. The decay mainly proceeds, where possible, through M1 radiation, in five- and six-step cascades. The 5− → 5− transitions are much stronger than the 5−→4− transitions. An experimental excitation energies are terms of the predominant configurations involved. The experimental excitation energies are compared with energy values obtained in a recent shell-model calculation.