PI-H(11 2) INTRUDER AND PI-G(9/2)(-1) STRONGLY COUPLED BANDS IN SB-115/

High spin states have been populated in Sb-115 with the reaction Mo-10 0(F-19,4n)Sb-115 at a beam energy of 82 MeV. Two intruder rotational b ands (Delta I=2) extending to spins 43/2(-) and 51/2(-) have been obse rved. The extracted relative B(E2) value supports the nearly diabatic nature of these two bands. The transition energies in these two bands are nearly similar and the bands have a relative spin alignment of 4h at low frequencies. The bands have been interpreted to be based on the pi h(11/2) orbital coupled to the deformed 2p-2h states of the Sn-114 core. Possible quasiparticle configurations for the excited negative parity band are discussed and it is suggested that this band is based on aligned h(11/2) neutrons, the yrare extension of which is observed diabatically down to very low spin values. Two strongly coupled (Delta I=1) rotational bands involving the (pi g(9/2))(-1) configuration hav e been observed, of which the known strongly coupled band has been ext ended from 23/2(+) to 37/2(+) in spin and the extracted B(M1;I-->I-1)\ B(E2;I-->I-2) values for this band are compared with the Donau-Frauend orf formula. Alignment features due to the h(11/2) neutrons in the obs erved bands are compared with the core nucleus Sn-114 and cranked shel l model calculations. Equilibrium deformations for a range of odd Sb i sotopes have been calculated with various intrinsic proton configurati ons.