Abstract
High spin states in the isotopes105,103In have been studied by in-beamγ-ray techniques. The reaction51V(58Ni, 2p 2n) populated those states in105In. A measurement of the linear polarizations ofγ-rays has revealed a negative-parity band in105In. The reaction48Ti(58Ni,p 2n) produced the isotope103In, which has showed an yrast spectrum similar to that observed in105In. The lifetimes of the 19/2+ and 17/2+ states in107,105In have been measured by the recoil distance method;T 1/2(19/2+)=27±4 ps andT 1/2(17/2+)=1.1 +0.6−0.3 ns for107In,T 1/2(19/2+)=4±2 ps andT 1/2(17/2+)=0.33±0.10 ns for105In.
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The authors thank Prof. K. Ogawa, Chiba University, for his encouragement and stimulating discussions. They also owe the supply of nice beams to the tandem crew.