High spin states in doubly odd {sup 122}I
- Department of Physics, Panjab University, Chandigarh-160014 (India)
- Department of Physics and Astrophysics, University of Delhi, Delhi-110007 (India)
- Tata Institute of Fundamental Research, Colaba, Bombay-400005 (India)
- Oliver Lodge Laboratory, University of Liverpool, P.O. Box 147, Liverpool L69 3BX (United Kingdom)
- Nuclear Science Centre, Jawahar Lal Nehru University, New Delhi-110067 (India)
High spin states in the doubly odd {sup 122}I nucleus have been investigated through {gamma}-{gamma} and charged particle-{gamma} coincidence measurements following the {sup 116}Cd+{sup 11}B and {sup 110}Pd+{sup 16}O fusion-evaporation reactions, respectively. The level scheme has been established up to I{sup {pi}}=(26{sup {minus}}). Two collective {Delta}I=1 coupled bands have been observed and are assigned the {pi}(g{sub 7/2}/d{sub 5/2}){circle_times}{nu}h{sub 11/2} and {pi}g{sub 9/2}{sup {minus}1}{circle_times}{nu}h{sub 11/2} configurations. Of these, the {pi}(g{sub 7/2}/d{sub 5/2}){circle_times}{nu}h{sub 11/2} band was known earlier but had been assigned the {pi}g{sub 9/2}{sup {minus}1}{circle_times}{nu}h{sub 11/2} configuration. A low lying 21{sup {minus}} state feeds this band and is interpreted as a noncollective oblate {pi}[g{sub 7/2}(d{sub 5/2}){sup 2}]{sub 15/2+}{circle_times}{nu}[(h{sub 11/2}){sup 3}]{sub 27/2{minus}} configuration. In addition, a {Delta}I=2 sequence has been identified and is proposed to be based on the {pi}h{sub 11/2}{circle_times}{nu}h{sub 11/2} configuration. The theoretical interpretations for the assigned configurations are discussed in the framework of total Routhian surface calculations, which also predict several noncollective oblate states in the spin range 21{le}I{le}33. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 496845
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 5 Vol. 55; ISSN PRVCAN; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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