Rotational bands in Nb101-103 and Y-98,Y-100 nuclei and identification of yrast bands in La-146 and Pr-149

Several gamma transitions in Nb101-103, Y-98,Y-100, La-146, and Pr-149 are identified from spontaneous fission studies employing a Cf-252 source and t he Gammasphere detector array. In particular, the pairing-free bands in Y-1 00 and Nb-102 are extended, two rather highly deformed negative-parity hand s feeding the 4.3-s beta-decaying isomer of Nb-102 are identified, and thei r possible bandhead configurations are discussed. In the case of Nb-101,Nb- 103, We have extended previously reported level schemes by over 20 transiti ons in each nuclide. For the fission partners La-146 and Pr-149 we have elu cidated their previously unreported yrast level schemes. [S0556-2813(98)041 12-0].