Gamma decays of positive parity states in 45Sc

Levels in 45Se have been investigated through the 42Ca(α,pγ)45Sc reaction. Gamma-ray spectra in coincidence with backscattered protons were recorded with a Ge(Li) detector positioned at angles 105 deg >=theta>=0 deg. The data corresponding to the members of the proposed Ksup(π)=3/2+ band were analyzed and led to the following results for excitation energies (keV), spins, parities and lifetimes (ps): 543.3, 5/2+, 9.2(+6.8 or -3.3); 974.8, 7/2+, 3.2(+0.8 or -0.7); 1433.8, 9/2+, 7.8(+4.3, or -2.2); 2031.6, 11/2+, 1.6(+0.8 or -0.5); and 2563.3, 9/2+, 9/2-, 11/2+, 13/2+, 2.0(+0.9, or 0.6). Multipole mixing ratios and γ-ray branching ratios were also obtained from the data and reduced electromagnetic transition matrix elements deduced