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Title: Structure of 0 + excitations in the mass A 100 region: 0 2 + bands in Sr 98 and Zr 100

Abstract

0+2 bands in 98Sr and 100Zr, populated in spontaneous fission of 248Cm and 252Cf, have been studied using the Eurogam2 and Gammasphere arrays. Phenomenological classification of excited 0+ levels in even-even nuclei of the A ≈ 100 region into four categories is presented and an interpretation for each category is proposed. Highly deformed 0+1 ground states and low-energy 0+2 levels in both nuclei are probably due to the 2p-2h excitation of two neutrons from the 9/2+[404] extruder to the low-Ω prolate and the 11/2[505] oblate orbitals originating from the h11/2 shell, respectively. As a result, candidates for 0+, β vibrational states in A ≈ 100 region are suggested at N > 60.

Authors:
 [1];  [1];  [1];  [2];  [3];  [3]
  1. Univ. of Warsaw, Warsaw (Poland)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. The Univ. of Manchester, Manchester (United Kingdom)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
Polish National Science Centre (NCN); USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1542589
Alternate Identifier(s):
OSTI ID: 1546254
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 99; 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

Urban, W., Rząca-Urban, T., Wiśniewski, J., Ahmad, I., Smith, A. G., and Simpson, G. S. Structure of 0+ excitations in the mass A≈100 region: 02+ bands in Sr98 and Zr100. United States: N. p., 2019. Web. doi:10.1103/PhysRevC.99.064325.
Urban, W., Rząca-Urban, T., Wiśniewski, J., Ahmad, I., Smith, A. G., & Simpson, G. S. Structure of 0+ excitations in the mass A≈100 region: 02+ bands in Sr98 and Zr100. United States. doi:10.1103/PhysRevC.99.064325.
Urban, W., Rząca-Urban, T., Wiśniewski, J., Ahmad, I., Smith, A. G., and Simpson, G. S. Fri . "Structure of 0+ excitations in the mass A≈100 region: 02+ bands in Sr98 and Zr100". United States. doi:10.1103/PhysRevC.99.064325. https://www.osti.gov/servlets/purl/1542589.
@article{osti_1542589,
title = {Structure of 0+ excitations in the mass A≈100 region: 02+ bands in Sr98 and Zr100},
author = {Urban, W. and Rząca-Urban, T. and Wiśniewski, J. and Ahmad, I. and Smith, A. G. and Simpson, G. S.},
abstractNote = {0+2 bands in 98Sr and 100Zr, populated in spontaneous fission of 248Cm and 252Cf, have been studied using the Eurogam2 and Gammasphere arrays. Phenomenological classification of excited 0+ levels in even-even nuclei of the A ≈ 100 region into four categories is presented and an interpretation for each category is proposed. Highly deformed 0+1 ground states and low-energy 0+2 levels in both nuclei are probably due to the 2p-2h excitation of two neutrons from the 9/2+[404] extruder to the low-Ω prolate and the 11/2–[505] oblate orbitals originating from the h11/2 shell, respectively. As a result, candidates for 0+, β vibrational states in A ≈ 100 region are suggested at N > 60.},
doi = {10.1103/PhysRevC.99.064325},
journal = {Physical Review C},
number = 6,
volume = 99,
place = {United States},
year = {2019},
month = {6}
}

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    Works referencing / citing this record:

    Quest of shape coexistence in Zr isotopes
    journal, October 2019