Lifetime study of high-spin states in In
D. Kast1 - A. Jungclaus1 - K.P. Lieb1 - M. Górska2,3 - G. de Angelis4 - P.G. Bizzeti5 - A. Dewald6 - C. Fahlander4 - H. Grawe2 - R. Peusquens6 - M. De Poli4 - H. Tiesler6
1 II. Physikalisches Institut, Universität Göttingen, D-37073 Göttingen, Germany
2 Gesellschaft für Schwerionenforschung, D-64291 Darmstadt, Germany
3 Institute of Experimental Physics, University of Warsaw, Warsaw, Poland.
4 Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Padova), Italy
5 Istituto Nazionale di Fisica Nucleare, Sezione di Firenze, I-50125 Firenze, Italy
6 Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
Received: 30 June 1998 Communicated by D. Schwalm
In the neutron deficient isotopes 104,105In lifetimes of high spin states in the range from 0.5 ps to 600 ps have been measured in a coincidence recoil distance Doppler shift (RDDS) experiment. By combining the Doppler shift attenuation (DSA) and RDDS methods at few m flight 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.
21.10.Tg Lifetimes - 21.60.Cs Shell model - 23.20.Lv Gamma transitions and level energies - 27.60.+j