High-spin states in {sup 135}Xe
Abstract
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.
- Authors:
-
- 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)
- Publication Date:
- OSTI Identifier:
- 20995284
- Resource Type:
- Journal Article
- Journal Name:
- Physical Review. C, Nuclear Physics
- Additional Journal Information:
- Journal Volume: 75; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevC.75.054322; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; COMPOUND NUCLEI; EVAPORATION; EXCITATION; FISSION; FISSION FRAGMENTS; FISSION PRODUCTS; GAMMA RADIATION; GAMMA SPECTRA; GAMMA SPECTROSCOPY; HIGH SPIN STATES; KEV RANGE; MASS NUMBER; NEUTRONS; SHELL MODELS; SPIN; THORIUM 226; XENON 135; YRAST STATES
Citation Formats
Fotiades, N, Nelson, R O, Devlin, M, Cizewski, J A, Becker, J A, Younes, W, Kruecken, R, Clark, R M, Fallon, P, Lee, I Y, Macchiavelli, A O, Ethvignot, T, and Granier, T. High-spin states in {sup 135}Xe. United States: N. p., 2007.
Web. doi:10.1103/PHYSREVC.75.054322.
Fotiades, N, Nelson, R O, Devlin, M, Cizewski, J A, Becker, J A, Younes, W, Kruecken, R, Clark, R M, Fallon, P, Lee, I Y, Macchiavelli, A O, Ethvignot, T, & Granier, T. High-spin states in {sup 135}Xe. United States. https://doi.org/10.1103/PHYSREVC.75.054322
Fotiades, N, Nelson, R O, Devlin, M, Cizewski, J A, Becker, J A, Younes, W, Kruecken, R, Clark, R M, Fallon, P, Lee, I Y, Macchiavelli, A O, Ethvignot, T, and Granier, T. 2007.
"High-spin states in {sup 135}Xe". United States. https://doi.org/10.1103/PHYSREVC.75.054322.
@article{osti_20995284,
title = {High-spin states in {sup 135}Xe},
author = {Fotiades, N and Nelson, R O and Devlin, M and Cizewski, J A and Becker, J A and Younes, W and Kruecken, R and Clark, R M and Fallon, P and Lee, I Y and Macchiavelli, A O and Ethvignot, T and Granier, T},
abstractNote = {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.},
doi = {10.1103/PHYSREVC.75.054322},
url = {https://www.osti.gov/biblio/20995284},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 5,
volume = 75,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}