Click here to view fulltext PDF

Permanent link:
https://www.ias.ac.in/article/fulltext/pram/057/02-03/0611-0622

Chiral symmetry; magnetic rotation

The deformed mean field of nuclei exhibits various geometrical and dynamical symmetries which manifest themselves as various types of rotational and decay patterns. Most of the symmetry operations considered so far have been defined for a situation wherein the angular momentum coincides with one of the principal axes and the principal axis cranking may be invoked. New possibilities arise with the observation of rotational features in weakly deformed nuclei and now interpreted as magnetic rotational bands. More than 120 MR bands have now been identified by filtering the existing data. We present a brief overview of these bands. The total angular momentum vector in such bands is tilted away from the principal axes. Such a situation gives rise to several new possibilities including breaking of chiral symmetry as discussed recently by Frauendorf. We present the outcome of such symmetries and their possible experimental verification. Some possible examples of chiral bands are presented.

Ashok Kumar Jain¹ Amita¹

1. Department of Physics, University of Roorkee, Roorkee - 247 667, India

Published

9 August 2001