Nuclear structure study of semi-magic {sup 125}Sn via (n,{gamma}) and (d,p) reactions

The nuclear structure of the semi-magic isotope {sup 125}Sn was investigated by means of the {sup 124}Sn(n{sub th},{gamma}{gamma}){sup 125}Sn reaction and the {sup 124}Sn(d-vector,p){sup 125}Sn reaction. More than 400 levels, in most cases with their spin, parity, (d,p) spectroscopic factor, and {gamma} decay, were identified. About 750 {gamma} transitions from our (n,{gamma}{gamma}) experiment form the essentially complete {gamma}-decay scheme following thermal neutron capture. Using this extensive {gamma}-decay scheme the neutron binding energy was determined to be 5733.5(2) keV. The strong correlation of the (d,p) strengths and the (n,{gamma}) intensities for more than 50 levels gives evidence for the direct neutron capture process, which was studied in detail. The experimental data were compared with predictions of the quasiparticle phonon model.