Rotational and pairing properties of 74Rb

D. J. Dean, S. E. Koonin, K. Langanke, P. B. Radha

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We use a cranked shell model Monte Carlo (SMMC) approach to study rotational properties and pair correlations in the odd-odd N = Z nucleus 74Rb. The calculation is performed in the complete 1p-0f5/2-0g9/2 model space with a residual interaction derived from the Paris potential. The calculated ground state is dominated by isovector J = 0 proton-neutron (pn) pairing. With increasing frequency the J = 0 pn correlations decrease to a constant value at around 〈J〉 = 3 ± 1.5(latin small letter h with stroke), while the isoscalar pn correlations (mainly J = 9) increase. Relatedly, the isospin decreases with frequency from its ground state value T = 1 as isoscalar correlations set in. This finding is in agreement with experiment, where at higher rotational frequency a T = 0 band becomes energetically favored over the T = 1 ground state band.

Original languageEnglish (US)
Pages (from-to)1-7
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-2
StatePublished - Apr 24 1997

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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