Negative parity levels in 195Pt via Coulomb excitation

Low lying negative parity levels in 195Pt were Coulomb excited with 4.0-5.5 MeV protons to test the weak coupling core-excitation model. A Ge(Li) detector was used to measure gamma ray yields and angular distributions. The levels at 449.6 and 793 keV were Coulomb excited repeatedly. The results of the gamma-ray angular distributions not only confirmed the assignment of 3/2 spin to the 199 keV level but also established 5/2, 5/2, and 3/2 spins for the levels at 389.6, 449.6 and 793 keV, respectively. The E2 and M1 transition probabilities for the 389.6, 449.6 and 793 keV transitions were found for the first time. The 211.2, 239.2, 389.6 and 793 keV states have electromagnetic properties consistent with the interpretation of coupling of a P1/2 neutron to the 21+ and 22+ core-states. (author)