Abstract
The first measurements are reported for (/sup 14/C,/sup 16/O) two-proton pickup reactions. Angular distributions for transitions up to approx. 3.5 MeV excitation in /sup 44,46/Ca and /sup 48,50/Ti were obtained with a 51-MeV /sup 14/C beam. The angular distributions exhibit a characteristic l dependence. Significant two-proton-hole configurations are found in the first excited 0/sup +/ states of /sup 44/Ca(1.88 MeV) and /sup 46/Ca(2.42 MeV). Evidence is presented for multistep excitation of the first 2/sup +/ states, especially in /sup 44/Ca and /sup 46/Ca where one-step transitions are expected to be inhibited.
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