HIGH-SPIN STUDIES OF THE NEUTRON-DEFICIENT NUCLEI IN-103, IN-105, IN-107, AND IN-109

High-spin states of the isotopes In-103,In-105,In-107,In-109 have been investigated using in-beam gamma-ray spectroscopic methods. Results f rom three different experiments are presented. Targets of Fe-54, Cr-50 , and Mo-92 were bombarded by a 270 and 261 MeV Ni-58 beam and by a 95 MeV F-19 beam, respectively. Reaction channel separation was achieved with a charged-particle detector array and in the first two experimen ts also with a 1 pi neutron detector system. As a result of these expe riments the level schemes of In-103,In-105,In-107,In-109 were signific antly extended. Excited states of these odd-A indium isotopes are disc ussed within the framework of the nuclear shell model and the hole-cor e coupling scheme. The systematics of excited states of light odd-A in dium isotopes is also discussed. (C) 1997 Elsevier Science B.V.