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Contrasting behavior in the rotational structure of the T-z=1/2 nuclei Kr-73 and Rb-75 : A possible fingerprint of T=0 neutron-proton pairing correlations
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- Wyss, Ramon (author)
- KTH,Kärnfysik
- Davies, Paul John (author)
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- Satula, Wojtek (author)
- KTH,Kärnfysik
- show more...
- Wadsworth, Robert (author)
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- (creator_code:org_t)
- 2007
- 2007
- English.
- In: Physical Review C. Nuclear Physics. - 0556-2813 .- 1089-490X. ; 76:1, s. 011301-
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Three different rotational bands have been observed to high spin in Rb-75 using Gammasphere. The structures are similar, but not identical to those found in the neighboring T-z=1/2 nucleus Kr-73. Conventional total Routhian surface (TRS) calculations with T=1 pairing are able to reproduce the rotational bands in Rb-75 with extreme accuracy, but they completely fail in reproducing the spectra and decay pattern of the negative parity bands in Kr-73. Simple qualitative arguments are put forward to show that the decay pattern observed in the negative parity bands in Kr-73 can be accounted for by means of T=0 pair correlations. To further corroborate this scenario, deformation, and pairing self-consistent TRS calculations, including schematic T=1 and T=0 pairing, are performed for the first time indicating the onset of dynamical T=0 pair-correlations at high angular momenta.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- symmetry energy
- wigner energy
- rich nuclei
- bands
- isospace
- Physics
- Fysik
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- ref (subject category)
- art (subject category)
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