Smooth termination of intruder bands in {sub 51}{sup 109}Sb
- Department of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794 (United States)
- Department of Physics, University of York, Heslington, York YO1 5DD (United Kingdom)
- Chalk River Laboratories, Atomic Energy of Canada Limited, Chalk River, Ontario, K0J 1J0 (CANADA)
- Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, L8S 4M1 (CANADA)
- Oliver Lodge Laboratory, University of Liverpool, P.O. Box 147, Liverpool L69 3BX (United Kingdom)
- Department of Physics, University of Toronto, Toronto, Ontario, M5S 1A7 (CANADA)
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
- Department of Mathematical Physics, University of Lund, P.O. Box 118, S-22100 Lund (Sweden)
Intruder rotational bands have been investigated to high frequency in {sub 51}{sup 109}Sb. Five decoupled ({Delta}{ital I}=2) bands extending to rotational frequencies above 1.4 MeV/{h_bar} have been observed. At the highest frequencies, the {ital J}{sup (2)} dynamic moments of inertia for four of these bands are seen to decrease steadily to unexpectedly low values, {ital J}{sup (2)} {approximately} 10 {h_bar}{sup 2}MeV{sup {minus}1}. These four bands, which are interpreted as being based on deformed 2p-2h proton excitations across the {ital Z}=50 closed-shell gap, achieve the so-called {open_quote}{open_quote}smooth band termination{close_quote}{close_quote} following alignment of the valence nucleons outside of {sup 100}Sn. In addition, two strongly coupled ({Delta}{ital I}=1) bands have been observed, which are related to 1p-1h proton excitations across the gap. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 385806
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 4 Vol. 54; ISSN PRVCAN; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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