LIFETIME STUDY OF HIGH-SPIN STATES IN (104,105) IN

In the neutron deficient isotopes In-104,In-105 lifetimes of high spin states in the range from 0.5 ps to 600 ps have been measured in a coi ncidence recoil distance Doppler shift (RDDS) experiment. By combining the Doppler shift attenuation (DSA) and RDDS methods at few mu m flig ht distances, the problem of delayed feeding has been avoided and very short lifetimes in the range 0.5 - 0.8 ps have been determined. Shell model calculations with strong restrictions for the neutron orbitals reveal good agreement with experimental level energies and still fair agreement for most measured B(M1) and B(E2) values.