Examples of dynamic chirality in nuclei

¹ Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia, Bulgaria
² INFN, Laboratori Nazionali di Legnaro, Legnaro, Italy
³ Inter-university Accelerator Centre, New Delhi, India
⁴ Nuclear Physics Department, Andhra University, Visakhapatnam, India
⁵ Department of Physics, Punjab University, Chandigarh, India
⁶ Department of Physics&Astrophysics, Delhi University, New Delhi, India
⁷ Department of Physics, Banaras Hindu University, Varanasi, India

^* e-mail: yavahchova@inrne.bas.bg

Published online: 14 November 2018

Abstract

In many cases the chirality was almost observed but the transition probabilities are different. This fact is clearly seen in the cases of ¹³⁴Pr and ¹⁰²Rh. In the case of chirality, the yrast and the side bands should be nearly degenerate. In the angular momentum region where chirality sets, the B(E2) values of the electromagnetic transitions deexciting analog states of the chiral twin bands should be almost equal. Correspondingly the B(M1) values should exhibit staggering. Our lifetime measurements in the cases of ¹³⁴Pr and ¹⁰²Rh and the theoretical analysis do not support static chirality. Chirality has mainly a dynamical character in both nuclei. In the present paper, we compare our results with the results for other chiral candidate nuclei, which fulfill static chirality conditions.