Conversion-electron spectroscopy and gamma-gamma angular correlation measurements in Sn-116

摘要

The (116) Sn nucleus was studied via the beta(-) decay of In-116 utilizing the 8 pi spectrometer and its auxiliary detectors at TRIUMF-ISAC. The resulting K-shell conversion coefficients, K/L ratios, and multipole mixing ratios are presented. The 2(3)(+) -> 2(1)(+) 931 keV and 2(2)(+) -> 2(1)(+) 819 keV transition mixing ratios were re-measured and found to be delta = +1.8(-0.5)(+ 0.7) and -1.83( 8), respectively. Newly measured mixing ratios for transitions among the low-lying I-pi = 4(+) states in Sn-116, when combined with gamma-ray intensity data, suggest that the 2529 keV 4(2)(+) state possesses a neutron broken-pair admixture in addition to its dominant proton 2p-2h component.