Sub-shell closure and shape coexistence in the transitional nucleus
Abstract
In the rapid shape change from spherical to deformed nuclei in the Z=40 Zr isotopic chain, recent work has identified shape coexistence in 96Zr. Between 96Zr and the strongly deformed 100Zr, 98Zr is expected to also exhibit coexistence of nuclear shapes. The degree of mixing between different configurations is mainly determined by the nucleon-nucleon interactions. For nuclear model predictions, experimental constraints are needed, but they are barely available for 98Zr. To study low-lying transitions in 98Zr, a Coulomb excitation experiment was conducted at the Argonne Tandem-Linac Accelerator System (ATLAS) facility using a 98Zr beam extracted from the Californium Rare Ion Breeder Upgrade (CARIBU) ion source and Gamma-Ray Energy Tracking In-beam Nuclear Array (GRETINA) for γ-ray spectroscopy coupled to the compact heavy ion counter (CHICO2) for ion detection. Furthermore, this paper reports on the first decisive deduction of the B(E2;2 + 1→0 + 1) transition strength in 98Zr and on its interpretation.
- Authors:
-
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- Technische Univ. Darmstadt, Darmstadt (Germany)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States); United States Naval Academy, Annapolis, MD (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Univ. of Rochester, Rochester, NY (United States)
- GSI Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
- Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of North Carolina, Chapel Hill, NC (United States); Duke Univ., Durham, NC (United States)
- Univ. Paris-Saclay, Gif-sur-Yvette (France)
- St. Kliment Ohridski Univ. of Sofia, Sofia (Bulgaria)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States); University of North Carolina, Chapel Hill, NC (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES); German Federal Ministry of Education and Research (BMBF); German Research Foundation (DFG); USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1478176
- Alternate Identifier(s):
- OSTI ID: 1478565; OSTI ID: 1484235; OSTI ID: 1659361
- Report Number(s):
- LLNL-JRNL-744414
Journal ID: ISSN 2469-9985; PRVCAN; 899584
- Grant/Contract Number:
- AC52-07NA27344; AC02-05CH11231; AC02-06CH11357; FG02-97ER41033; FG02-97ER41041
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C
- Additional Journal Information:
- Journal Volume: 98; Journal Issue: 4; Journal ID: ISSN 2469-9985
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Electromagnetic transitions; Low & intermediate energy heavy-ion reactions; Nuclear structure & decays; Nucleon distribution; 90 ≤ A ≤ 149; Radioactive beams
Citation Formats
Witt, W., Werner, V., Pietralla, N., Albers, M., Ayangeakaa, A. D., Bucher, B., Carpenter, M. P., Cline, D., David, H. M., Hayes, A., Hoffman, C., Janssens, R. V. F., Kay, B. P., Kondev, F. G., Korten, W., Lauritsen, T., Möller, O., Rainovski, G., Savard, G., Seweryniak, D., Smith, J., Stegmann, R., Zhu, S., and Wu, C. Y. Sub-shell closure and shape coexistence in the transitional nucleus Zr98. United States: N. p., 2018.
Web. doi:10.1103/PhysRevC.98.041302.
Witt, W., Werner, V., Pietralla, N., Albers, M., Ayangeakaa, A. D., Bucher, B., Carpenter, M. P., Cline, D., David, H. M., Hayes, A., Hoffman, C., Janssens, R. V. F., Kay, B. P., Kondev, F. G., Korten, W., Lauritsen, T., Möller, O., Rainovski, G., Savard, G., Seweryniak, D., Smith, J., Stegmann, R., Zhu, S., & Wu, C. Y. Sub-shell closure and shape coexistence in the transitional nucleus Zr98. United States. https://doi.org/10.1103/PhysRevC.98.041302
Witt, W., Werner, V., Pietralla, N., Albers, M., Ayangeakaa, A. D., Bucher, B., Carpenter, M. P., Cline, D., David, H. M., Hayes, A., Hoffman, C., Janssens, R. V. F., Kay, B. P., Kondev, F. G., Korten, W., Lauritsen, T., Möller, O., Rainovski, G., Savard, G., Seweryniak, D., Smith, J., Stegmann, R., Zhu, S., and Wu, C. Y. Tue .
"Sub-shell closure and shape coexistence in the transitional nucleus Zr98". United States. https://doi.org/10.1103/PhysRevC.98.041302. https://www.osti.gov/servlets/purl/1478176.
@article{osti_1478176,
title = {Sub-shell closure and shape coexistence in the transitional nucleus Zr98},
author = {Witt, W. and Werner, V. and Pietralla, N. and Albers, M. and Ayangeakaa, A. D. and Bucher, B. and Carpenter, M. P. and Cline, D. and David, H. M. and Hayes, A. and Hoffman, C. and Janssens, R. V. F. and Kay, B. P. and Kondev, F. G. and Korten, W. and Lauritsen, T. and Möller, O. and Rainovski, G. and Savard, G. and Seweryniak, D. and Smith, J. and Stegmann, R. and Zhu, S. and Wu, C. Y.},
abstractNote = {In the rapid shape change from spherical to deformed nuclei in the Z=40 Zr isotopic chain, recent work has identified shape coexistence in 96Zr. Between 96Zr and the strongly deformed 100Zr, 98Zr is expected to also exhibit coexistence of nuclear shapes. The degree of mixing between different configurations is mainly determined by the nucleon-nucleon interactions. For nuclear model predictions, experimental constraints are needed, but they are barely available for 98Zr. To study low-lying transitions in 98Zr, a Coulomb excitation experiment was conducted at the Argonne Tandem-Linac Accelerator System (ATLAS) facility using a 98Zr beam extracted from the Californium Rare Ion Breeder Upgrade (CARIBU) ion source and Gamma-Ray Energy Tracking In-beam Nuclear Array (GRETINA) for γ-ray spectroscopy coupled to the compact heavy ion counter (CHICO2) for ion detection. Furthermore, this paper reports on the first decisive deduction of the B(E2;2 + 1→0 + 1) transition strength in 98Zr and on its interpretation.},
doi = {10.1103/PhysRevC.98.041302},
journal = {Physical Review C},
number = 4,
volume = 98,
place = {United States},
year = {Tue Oct 16 00:00:00 EDT 2018},
month = {Tue Oct 16 00:00:00 EDT 2018}
}
Web of Science
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