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Title: New excitations in Ba 142 and Ce 144 : Evolution of γ bands in the N = 86 isotones

Abstract

New excited states in 142Ba and 144Ce are investigated by means of prompt γ-ray spectroscopy of the radiation following spontaneous fission of 252Cf. Measurements of angular correlations and the observed branchings allowed the assignment of spins and parities with confidence. The new measurements are reinforced by shell-model calculations where energy levels, electric transitions, and magnetic moments are consistent with experimental data. Lastly, the presence of collectivity in the N = 86 isotones is confirmed by clear signatures of soft triaxial γ bands in both nuclei.

Authors:
 [1];  [2];  [2];  [3];  [3];  [3];  [3];  [3];  [2];  [4];  [4];  [5];  [6];  [6]
  1. Univ. de Strasbourg, Strasbourg (France); Univ. Constantine, Constantine (Algeria)
  2. Univ. de Strasbourg, Strasbourg (France)
  3. Univ. of Warsaw, Warsaw (Poland)
  4. The Univ. of Manchester, Manchester (United Kingdom)
  5. Institut National Polytechnique de Grenoble, Grenoble Cedex (France)
  6. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); Polish National Science Centre (NCN)
OSTI Identifier:
1364617
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 95; Journal Issue: 6; 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

Naidja, H., Nowacki, F., Bounthong, B., Czerwinski, M., Rzaca-Urban, T., Roginski, T., Urban, W., Wisniewski, J., Sieja, K., Smith, A. G., Smith, J. F., Simpson, G. S., Ahmad, I., and Greene, J. P. New excitations in Ba142 and Ce144: Evolution of γ bands in the N=86 isotones. United States: N. p., 2017. Web. doi:10.1103/PhysRevC.95.064303.
Naidja, H., Nowacki, F., Bounthong, B., Czerwinski, M., Rzaca-Urban, T., Roginski, T., Urban, W., Wisniewski, J., Sieja, K., Smith, A. G., Smith, J. F., Simpson, G. S., Ahmad, I., & Greene, J. P. New excitations in Ba142 and Ce144: Evolution of γ bands in the N=86 isotones. United States. doi:10.1103/PhysRevC.95.064303.
Naidja, H., Nowacki, F., Bounthong, B., Czerwinski, M., Rzaca-Urban, T., Roginski, T., Urban, W., Wisniewski, J., Sieja, K., Smith, A. G., Smith, J. F., Simpson, G. S., Ahmad, I., and Greene, J. P. Fri . "New excitations in Ba142 and Ce144: Evolution of γ bands in the N=86 isotones". United States. doi:10.1103/PhysRevC.95.064303. https://www.osti.gov/servlets/purl/1364617.
@article{osti_1364617,
title = {New excitations in Ba142 and Ce144: Evolution of γ bands in the N=86 isotones},
author = {Naidja, H. and Nowacki, F. and Bounthong, B. and Czerwinski, M. and Rzaca-Urban, T. and Roginski, T. and Urban, W. and Wisniewski, J. and Sieja, K. and Smith, A. G. and Smith, J. F. and Simpson, G. S. and Ahmad, I. and Greene, J. P.},
abstractNote = {New excited states in 142Ba and 144Ce are investigated by means of prompt γ-ray spectroscopy of the radiation following spontaneous fission of 252Cf. Measurements of angular correlations and the observed branchings allowed the assignment of spins and parities with confidence. The new measurements are reinforced by shell-model calculations where energy levels, electric transitions, and magnetic moments are consistent with experimental data. Lastly, the presence of collectivity in the N = 86 isotones is confirmed by clear signatures of soft triaxial γ bands in both nuclei.},
doi = {10.1103/PhysRevC.95.064303},
journal = {Physical Review C},
number = 6,
volume = 95,
place = {United States},
year = {Fri Jun 02 00:00:00 EDT 2017},
month = {Fri Jun 02 00:00:00 EDT 2017}
}

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Cited by: 4 works
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