Evidence for isovector neutron-proton pairing from high-spin states in N = Z 74Rb
(2003) In Physical Review C - Nuclear Physics 67(2). p.213011-213015- Abstract
High-spin states in the odd-odd N = Z nucleus 3774Rb37 were studied using the 40Ca(40Ca,αnp) reaction. A previously observed odd-spin T = 0 band has been extended to Iπ = (31+) and an even-spin T = 0 band has been observed for the first time to Iπ = (22+); both have a π(g9/2)⊗ν(g9/2) structure. A strongly coupled low-spin T = 0, K = 3 band has been interpreted as being based upon a π[312]3/2 ⊗ ν[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... (More)
High-spin states in the odd-odd N = Z nucleus 3774Rb37 were studied using the 40Ca(40Ca,αnp) reaction. A previously observed odd-spin T = 0 band has been extended to Iπ = (31+) and an even-spin T = 0 band has been observed for the first time to Iπ = (22+); both have a π(g9/2)⊗ν(g9/2) structure. A strongly coupled low-spin T = 0, K = 3 band has been interpreted as being based upon a π[312]3/2 ⊗ ν[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.
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- author
- organization
- publishing date
- 2003-02-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review C - Nuclear Physics
- volume
- 67
- issue
- 2
- article number
- 021301
- pages
- 5 pages
- publisher
- American Physical Society
- external identifiers
-
- scopus:0037316567
- ISSN
- 0556-2813
- language
- English
- LU publication?
- yes
- id
- 3313dbfd-2dce-4f9a-81c4-ba40ffb4b587
- date added to LUP
- 2024-01-19 09:22:25
- date last changed
- 2024-01-19 09:23:17
@article{3313dbfd-2dce-4f9a-81c4-ba40ffb4b587, abstract = {{<p>High-spin states in the odd-odd N = Z nucleus <sub>37</sub><sup>74</sup>Rb<sub>37</sub> were studied using the <sup>40</sup>Ca(<sup>40</sup>Ca,αnp) reaction. A previously observed odd-spin T = 0 band has been extended to I<sup>π</sup> = (31<sup>+</sup>) and an even-spin T = 0 band has been observed for the first time to I<sup>π</sup> = (22<sup>+</sup>); both have a π(g<sub>9/2</sub>)⊗ν(g<sub>9/2</sub>) structure. A strongly coupled low-spin T = 0, K = 3 band has been interpreted as being based upon a π[312]3/2 ⊗ ν[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.</p>}}, author = {{O'Leary, C. D. and Svensson, C. E. and Frauendorf, S. G. and Afanasjev, A. V. and Appelbe, D. E. and Austin, R. A.E. and Ball, G. C. and Cameron, J. A. and Clark, R. M. and Cromaz, M. and Fallen, P. and Hodgson, D. F. and Kelsall, N. S. and Macchiavelli, A. O. and Ragnarsson, I. and Sarantites, D. and Waddington, J. C. and Wadsworth, R.}}, issn = {{0556-2813}}, language = {{eng}}, month = {{02}}, number = {{2}}, pages = {{213011--213015}}, publisher = {{American Physical Society}}, series = {{Physical Review C - Nuclear Physics}}, title = {{Evidence for isovector neutron-proton pairing from high-spin states in N = Z <sup>74</sup>Rb}}, volume = {{67}}, year = {{2003}}, }