SPECTROSCOPY OF CROSS-CONJUGATE NUCLEI TI-46-CR-50 AND V-47-CR-49 NEAR THE F(7 2)-SHELL BAND TERMINATION/

High-spin states in the cross-conjugate pairs of nuclei Ti-46-Cr-50 an d V47--Cr-49 have been investigated using the reaction Si-28+Si-nat at laboratory energy of 125 MeV. Coincidence spectra, in some cases gate d by char ed particle detection, allow the yrast level schemes of all four nuclei to be extended, up to the f(7/2)-shell band termination at 14(+) and 31/2- in Ti-46 and Cr-49, and beyond to 17(+) and 35/2(-) i n Cr-50 and V-47. Opposite-parity bands in Ti-46 and 47V were observed up to 11- and 31/2(+), respectively. Lifetimes derived from DSAM meas urements provide B(E2) and B(M1) values for transitions among the high er levels of each of the nuclei. These are compared with earlier measu rements and with f(7/2)- and fp-shell model calculations. No model cal culations have been published for the opposite-parity bands, but their level spacing and reduced transition rates support a spectator nature of the sd hole.