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Abstract content <br> (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>
A nuclear chiral system is formed when the total angular momentum of the nucleus is aplanar, i.e. when it has significant projections along all three nuclear axes [1]. Most important for the identification of chiral bands is to establish a pair of ∆I = 1 bands that are near-degenerate in energy, but also in B(M1) and B(E2) transition probabilities [1]. Up to date, chiral candidates showing two- or multi-quasiparticle partner bands have been observed in several nuclei in A ~ 80, 100, 130 and 190 mass regions. The existence of multiple chiral partner bands (MχD) with large triaxial deformation, but with different particle-hole configuration was proposed in a single nucleus [2]. The MχD was firstly experimentally confirmed in 133Ce [3].
Contrary to MχD that differ from each other in their particle-hole configurations and may correspond to different triaxial deformations. We investigated the existence of multiple chiral bands built on the same configuration. Our calculations using the two-quasparticle-plus-triaxial-rotor (TQPRM) and multi-particle-plus-triaxial-rotor (MPR) models, confirm that more than one pair of chiral bands may exist in a nucleus with the same nucleon configuration [4]. Multiple chiral systems were found in the 100, 130 and 130 mass regions, but they may not necessarily form well defined pairs of near-degenerate bands. The present work studies how one can identify or group chiral pairs in multiple chiral bands associated with the same nucleon configuration. The results from these calculations will be presented and discussed.
This work is supported by the National Research Foundation, South Africa.
[1] S. Frauendorf, J. Meng, Nucl. Phys. A617, (1997)131
[2] J. Meng et al., Phys. Rev. C73, (2006)037303
[3] A.D. Ayangeakaa et al., Phys. Rev. Lett. 110, (2013)172504
[4] O. Shirinda and E.A. Lawrie, Acta Phys. Pol. B46, (2015) 683
Apply to be<br> considered for a student <br> award (Yes / No)?
No
Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)
Yes
Level for award<br> (Hons, MSc, <br> PhD, N/A)?
N/A
Main supervisor (name and email)<br>and his / her institution
Dr. Obed Shirinda
obed@tlabs.ac.za
iThemba LABS
University of Stellenbosch
Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?
Yes
