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Title: Deformation of rotational structures in {sup 73}Kr and {sup 74}Rb: Probing the additivity principle at triaxial shapes

Abstract

Lifetimes have been deduced in the intermediate/high-spin range for the three known rotational bands in {sup 73}Kr and the T=0 band in {sup 74}Rb using the residual Doppler shift method. This has enabled relative transition quadrupole moments to be studied for the first time in triaxial nuclei as a function of spin. The data suggest that the additivity principle for transition quadrupole moments is violated, a result that is in disagreement with predictions from cranked Nilsson-Strutinsky and cranked relativistic mean-field theory calculations. The reasons for the discrepancy are not understood but may indicate that important correlations are missing from the models.

Authors:
; ; ;  [1];  [2]; ;  [3];  [4]; ; ; ; ;  [5];  [6];  [7];  [3];  [8]; ;  [9];  [10]
  1. Department of Physics, University of York, Heslington, York YO10 5DD (United Kingdom)
  2. Department of Physics and Astronomy, Mississippi State University, Mississippi 39762 (United States)
  3. Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1 (Canada)
  4. Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4K1 (Canada)
  5. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  6. North Carolina State University, Raleigh, North Carolina 27695 (United States)
  7. Department of Physics and Astronomy, University of Manchester, Manchester M15 9PL (United Kingdom)
  8. CEA Saclay, IRFU/Service de Physique Nucleaire, F-91191 Gif-sur-Yvette (France)
  9. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
  10. Department of Chemistry, Washington University, St. Louis, Missouri 63130 (United States)
Publication Date:
OSTI Identifier:
21192194
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 78; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.78.034312; (c) 2008 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; CORRELATIONS; DEFORMATION; DOPPLER EFFECT; FORECASTING; KRYPTON 73; LIFETIME; MEAN-FIELD THEORY; QUADRUPOLE MOMENTS; RELATIVISTIC RANGE; ROTATIONAL STATES; RUBIDIUM 74; SPECTRAL SHIFT; SPIN

Citation Formats

Johnston-Theasby, F, Jenkins, D G, Joshi, P, Wadsworth, R, Afanasjev, A V, Laboratory of Radiation Physics, Institute of Solid State Physics, University of Latvia, LV 2169 Salaspils, Miera str. 31, Andreoiu, C, Svensson, C E, Austin, R A. E., Carpenter, M P, Greene, J, Moore, F, Mukherjee, G, Seweryniak, D, Dashdorj, D, Freeman, S J, Garrett, P E, TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3, Goergen, A, Macchiavelli, A O, Ward, D, and Reviol, W. Deformation of rotational structures in {sup 73}Kr and {sup 74}Rb: Probing the additivity principle at triaxial shapes. United States: N. p., 2008. Web. doi:10.1103/PHYSREVC.78.034312.
Johnston-Theasby, F, Jenkins, D G, Joshi, P, Wadsworth, R, Afanasjev, A V, Laboratory of Radiation Physics, Institute of Solid State Physics, University of Latvia, LV 2169 Salaspils, Miera str. 31, Andreoiu, C, Svensson, C E, Austin, R A. E., Carpenter, M P, Greene, J, Moore, F, Mukherjee, G, Seweryniak, D, Dashdorj, D, Freeman, S J, Garrett, P E, TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3, Goergen, A, Macchiavelli, A O, Ward, D, & Reviol, W. Deformation of rotational structures in {sup 73}Kr and {sup 74}Rb: Probing the additivity principle at triaxial shapes. United States. https://doi.org/10.1103/PHYSREVC.78.034312
Johnston-Theasby, F, Jenkins, D G, Joshi, P, Wadsworth, R, Afanasjev, A V, Laboratory of Radiation Physics, Institute of Solid State Physics, University of Latvia, LV 2169 Salaspils, Miera str. 31, Andreoiu, C, Svensson, C E, Austin, R A. E., Carpenter, M P, Greene, J, Moore, F, Mukherjee, G, Seweryniak, D, Dashdorj, D, Freeman, S J, Garrett, P E, TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3, Goergen, A, Macchiavelli, A O, Ward, D, and Reviol, W. Mon . "Deformation of rotational structures in {sup 73}Kr and {sup 74}Rb: Probing the additivity principle at triaxial shapes". United States. https://doi.org/10.1103/PHYSREVC.78.034312.
@article{osti_21192194,
title = {Deformation of rotational structures in {sup 73}Kr and {sup 74}Rb: Probing the additivity principle at triaxial shapes},
author = {Johnston-Theasby, F and Jenkins, D G and Joshi, P and Wadsworth, R and Afanasjev, A V and Laboratory of Radiation Physics, Institute of Solid State Physics, University of Latvia, LV 2169 Salaspils, Miera str. 31 and Andreoiu, C and Svensson, C E and Austin, R A. E. and Carpenter, M P and Greene, J and Moore, F and Mukherjee, G and Seweryniak, D and Dashdorj, D and Freeman, S J and Garrett, P E and TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3 and Goergen, A and Macchiavelli, A O and Ward, D and Reviol, W},
abstractNote = {Lifetimes have been deduced in the intermediate/high-spin range for the three known rotational bands in {sup 73}Kr and the T=0 band in {sup 74}Rb using the residual Doppler shift method. This has enabled relative transition quadrupole moments to be studied for the first time in triaxial nuclei as a function of spin. The data suggest that the additivity principle for transition quadrupole moments is violated, a result that is in disagreement with predictions from cranked Nilsson-Strutinsky and cranked relativistic mean-field theory calculations. The reasons for the discrepancy are not understood but may indicate that important correlations are missing from the models.},
doi = {10.1103/PHYSREVC.78.034312},
url = {https://www.osti.gov/biblio/21192194}, journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 3,
volume = 78,
place = {United States},
year = {2008},
month = {9}
}