Minimal theory of isomerism- Q.Q and other interactions

• Published in: Physica scripta Vol. 96; no. 6; pp. 65307 - 65314
• Main Authors: Srivastava, P C, Zamick, L
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01-06-2021
• ISSN: 0031-8949; 1402-4896
• DOI: 10.1088/1402-4896/abf306

We perform shell model calculations using a quadrupole-quadrupole interaction (Q.Q) in a single
j
shell space. We show that this one-parameter interaction is a good predictor of where nuclear isomerism occurs and where it does not occur. The limitations of this interaction are also discussed. We then include other interactions, e.g. in the
f
7
/
2
shell those obtained from the (local) spectrum of a two particle system and then from a two hole system. In the
g
9
/
2
where there is insufficient empirical data from the two hole system and so various empirical interactions are used.