Mass and low-lying levels ofIn106,108from theCd106,108(p,nγ)reactions

Abstract
In106 has been studied via the reaction Cd106(p,nγ)In106 in the energy range Ep=79 MeV. Inbeam γ-ray excitation functions, γγ coincidence measurements, and β+-delayed γ-ray excitation functions have been used to identify thirteen levels in In106. From this new level scheme the energy separation of the high-spin ground state and the low-spin isomer has been determined to be 28.6±0.5 keV. The threshold energy of the strongest low-lying γ-ray transition yields a mass excess for In106 of -80601±15 keV. Spins for some states are suggested by comparing the excitation functions to Hauser-Feshbach calculations. In-beam γ-ray excitation functions for the Cd108(p,nγ)In108 reaction give a mass excess for the 3+ β+-decaying state in In108 of -84018±12 keV. The systematics of odd-odd In nuclei are discussed in a jj coupling model.

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