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Evidence for isovector neutron-proton pairing from high-spin states in N=Z Rb-74

O'Leary, CD; Svensson, CE; Frauendorf, SG; Afanasjev, AV; Appelbe, DE; Austin, RAE; Ball, GC; Cameron, JA; Clark, RM and Cromaz, M, et al. (2003) In Physical Review C (Nuclear Physics) 67(2: 021301).
Abstract
High-spin states in the odd-odd N=Z nucleus Rb-74(37)37 were studied using the Ca-40(Ca-40,alphanp) reaction. A previously observed odd-spin T=0 band has been extended to I-pi=(31(+)) and an even-spin T=0 band has been observed for the first time to I-pi=(22(+)); both have a pi(g(9/2))circle timesnu(g(9/2)) structure. A strongly coupled low-spin T=0,K=3 band has been interpreted as being based upon a pi[312]3/2 circle timesnu[312]3/2 configuration. Cranked relativistic Hartree-Bogoliubov calculations, which are corrected for the t=1 np-pair field by restoring isospin symmetry, reproduce the observed spectrum. These new results provide evidence for the existence of an isovector pair field that contains a neutron-proton component with the... (More)
High-spin states in the odd-odd N=Z nucleus Rb-74(37)37 were studied using the Ca-40(Ca-40,alphanp) reaction. A previously observed odd-spin T=0 band has been extended to I-pi=(31(+)) and an even-spin T=0 band has been observed for the first time to I-pi=(22(+)); both have a pi(g(9/2))circle timesnu(g(9/2)) structure. A strongly coupled low-spin T=0,K=3 band has been interpreted as being based upon a pi[312]3/2 circle timesnu[312]3/2 configuration. Cranked relativistic Hartree-Bogoliubov calculations, which are corrected for the t=1 np-pair field by restoring isospin symmetry, reproduce the observed spectrum. These new results provide evidence for the existence of an isovector pair field that contains a neutron-proton component with the proper strength for ensuring isospin conservation. (Less)
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Physical Review C (Nuclear Physics)
volume
67
issue
2: 021301
publisher
American Physical Society
external identifiers
  • wos:000181377400001
  • scopus:85039020786
ISSN
0556-2813
DOI
10.1103/PhysRevC.67.021301
language
English
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yes
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d44714ae-23fc-44d4-86e7-8e75293196b6 (old id 316829)
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2007-09-19 14:55:54
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2018-05-29 10:23:06
@article{d44714ae-23fc-44d4-86e7-8e75293196b6,
  abstract     = {High-spin states in the odd-odd N=Z nucleus Rb-74(37)37 were studied using the Ca-40(Ca-40,alphanp) reaction. A previously observed odd-spin T=0 band has been extended to I-pi=(31(+)) and an even-spin T=0 band has been observed for the first time to I-pi=(22(+)); both have a pi(g(9/2))circle timesnu(g(9/2)) structure. A strongly coupled low-spin T=0,K=3 band has been interpreted as being based upon a pi[312]3/2 circle timesnu[312]3/2 configuration. Cranked relativistic Hartree-Bogoliubov calculations, which are corrected for the t=1 np-pair field by restoring isospin symmetry, reproduce the observed spectrum. These new results provide evidence for the existence of an isovector pair field that contains a neutron-proton component with the proper strength for ensuring isospin conservation.},
  author       = {O'Leary, CD and Svensson, CE and Frauendorf, SG and Afanasjev, AV and Appelbe, DE and Austin, RAE and Ball, GC and Cameron, JA and Clark, RM and Cromaz, M and Fallon, P and Hodgson, DF and Kelsall, NS and Macchiavelli, AO and Ragnarsson, Ingemar and Sarantites, D and Waddington, JC and Wadsworth, R},
  issn         = {0556-2813},
  language     = {eng},
  number       = {2: 021301},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Evidence for isovector neutron-proton pairing from high-spin states in N=Z Rb-74},
  url          = {http://dx.doi.org/10.1103/PhysRevC.67.021301},
  volume       = {67},
  year         = {2003},
}