First observation of a rotational band in odd {sub 50}Sn nuclei: {sup 111}Sn
- 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)
- Oliver Lodge Laboratory, University of Liverpool, P.O. Box 147, Liverpool L69 3BX (United Kingdom)
Proton particle-hole excitations across the {ital Z}=50 closed shell are responsible for inducing low-lying prolate deformation in even-{sub 50}Sn nuclei. Although related rotational bands have been studied in odd-{sub 51}Sb isotopes involving the coupling of a valence proton, none had been found in odd-{sub 50}Sn nuclei. Using the {sup 96}Ru({sup 19}F,3{ital pn}) reaction, a decoupled band has been observed in {sup 111}Sn extending to a spin-parity of (67/2{sup {minus}}) and feeding out at 23/2{sup {minus}} into spherical states. This band is interpreted as the {nu}{ital h}{sub 11/2} valence orbital coupled to the deformed [({pi}{ital g}{sub 7/2}){sup 2}{direct_product}({pi}{ital g}{sub 9/2}){sup {minus}2}] {sup 110}Sn core. The extracted band properties are compared to those in {sup 111}Sb with the same deformed core.
- OSTI ID:
- 55127
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 6 Vol. 51; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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