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Microscopic structure of fundamental excitations in N = Z nuclei
KTH, Superseded Departments, Physics.
2001 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 8705, no 5Article in journal (Refereed) Published
Abstract [en]

An extended mean-field model is presented that describes states of different isospin in odd-odd and even-even nuclei. Excitation energies of the T = 1 states in even-even as well as T = 0 and T = 1 states in odd-odd N = Z nuclei are calculated. It is shown that the structure of these states can be determined in a consistent manner when both isoscalar and isovector pairing collectivity as well as isospin projection (treated here within the isocranking approximation) are taken into account. In particular, in odd-odd N = Z nuclei, the interplay between quasiparticle excitations (relevant for the case of T = 0 states) and isorotations (relevant for the case of T = 1 states) explains the near degeneracy of these states.

Place, publisher, year, edition, pages
2001. Vol. 8705, no 5
Keyword [en]
symmetry, model, n=z
URN: urn:nbn:se:kth:diva-20840DOI: 10.1103/PhysRevLett.87.052504ISI: 000170212200015OAI: diva2:339537
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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