High-spin states in {sup 135}Xe
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
- Department of Physics and Astronomy, Rutgers University, New Brunswick, New Jersey 08903 (United States)
- Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
- Physik Department E12, Technische Universitaet Muenchen, D-85748 Garching (Germany)
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
- C.E.A., DAM Ile-de-France, DPTA/Service de Physique Nucleaire, BP 12, F-91680 Bruyeres-le-Chatel (France)
The high-spin structure of the {sup 135}Xe isotope was studied via prompt {gamma}-ray spectroscopy in two different experiments: (i) as a fission fragment following the fission of the {sup 226}Th compound nucleus formed in a fusion-fission reaction and (ii) as an evaporation residue in the {sub 136}Xe(n,2n{gamma}){sup 135}Xe reaction. The level scheme above the previously known 11/2{sup -} isomer was established up to 3170-keV excitation energy. A strong sequence has been firmly assigned to {sup 135}Xe and forms the yrast decay path including the (15/2{sup -}) and (19/2{sup -}) states. A much weaker sequence of {gamma} rays has been observed and tentatively assigned to {sup 135}Xe and is a candidate for the off-yrast sequence that includes the (13/2{sup -}) and (17/2{sup -}) states, expected in the weak coupling of the h{sub 11/2} neutron to the even-A core. The experimental results are compared with predictions from shell-model calculations.
- OSTI ID:
- 20995284
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 75, Issue 5; Other Information: DOI: 10.1103/PhysRevC.75.054322; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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