Abstract

The positive-parity yrast states in the Y91 and Nb95 nuclei have been studied by γ-ray spectroscopy following heavy-ion-induced fusion-evaporation reactions. The lowest-lying transitions in these structures have been assigned via the p2n channel of the reactions of C12 (38 MeV) and O16 (48 MeV) beams with a Se82 target, studied at the Bucharest Tandem accelerator. More detailed level schemes have been determined subsequently in a study performed with the GASP array of the inverse reactions produced by a Se82 (470 MeV) beam from the Legnaro Tandem-LINAC accelerator with oxygen and possibly carbon contaminants of a Os192 target. The observed level schemes are compared with local systematics and shell-model calculations.3 MoreReceived 26 July 2004DOI:https://doi.org/10.1103/PhysRevC.71.034315©2005 American Physical Society

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