LEVEL SCHEME OF SB-114 FROM THE (P, N-GAMMA) REACTION

Measurement of gamma, gammagamma-coincidence, internal conversion elec tron and gamma-ray angular distribution spectra for the Sn-114(p, ngam ma) Sb-114 reaction were made at 7.8 and 8.0 MeV bombarding proton ene rgies with Ge gamma-ray and superconducting magnetic lens-plus-Si(Li) electron spectrometers. The energies and relative intensities of 74 Sb -114 gamma rays, as well as the internal conversion coefficients of 31 Sb-114 transitions have been determined and new angular distribution data have been obtained for 26 gamma rays. From this information, a mo re complete and consistent level scheme has been deduced. Spin and par ity values have been determined from the internal conversion coefficie nts, Hauser-Feshbach analysis of the (p, n) reaction cross sections, a nd the gamma-ray angular distributions. The low-lying levels were grou ped into proton-neutron multiplets and the energy splitting of these m ultiplets have been interpreted in terms of the parabolic rule.