Abstract
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 language | English (US) |
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Pages (from-to) | 1-7 |
Number of pages | 7 |
Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Volume | 399 |
Issue number | 1-2 |
DOIs | |
State | Published - Apr 24 1997 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics