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Title: Sub-shell closure and shape coexistence in the transitional nucleus Zr 98

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:
 [1];  [1];  [1];  [2];  [3];  [4];  [2];  [5];  [6];  [5];  [2];  [7];  [2];  [2];  [8];  [2];  [1];  [9];  [2];  [2] more »;  [2];  [1];  [2];  [4] « less
  1. Technische Univ. Darmstadt, Darmstadt (Germany)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States); United States Naval Academy, Annapolis, MD (United States)
  4. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  5. Univ. of Rochester, Rochester, NY (United States)
  6. GSI Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
  7. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of North Carolina, Chapel Hill, NC (United States); Duke Univ., Durham, NC (United States)
  8. Univ. Paris-Saclay, Gif-sur-Yvette (France)
  9. St. Kliment Ohridski Univ. of Sofia, Sofia (Bulgaria)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); German Federal Ministry of Education and Research (BMBF); German Research Foundation (DFG)
OSTI Identifier:
1478176
Alternate Identifier(s):
OSTI ID: 1478565; OSTI ID: 1484235
Report Number(s):
LLNL-JRNL-744414
Journal ID: ISSN 2469-9985; PRVCAN; 899584
Grant/Contract Number:  
AC52-07NA27344; AC02-05CH11231; AC02-06CH11357; FG02-97ER41033
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

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. 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., and Wu, C. Y. Tue . "Sub-shell closure and shape coexistence in the transitional nucleus Zr98". United States. doi: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 = {2018},
month = {10}
}

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