Eur. Phys. J. A (2010) 45: 39-50
https://doi.org/10.1140/epja/i2010-10994-x

Regular Article - Experimental Physics

Candidate chiral bands in ¹⁹⁸Tl

¹ iThemba LABS, P.O. Box 722, 7129, Somerset West, South Africa
² University of the Western Cape, Private Bag X17, 7525, Bellville, South Africa
³ Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CNRS - IN2P3, F-91405, Orsay, France
⁴ Department of Physics, University of Cape Town, Private Bag, 7701, Rondebosch, South Africa
⁵ Division of Mathematical Physics, LHT, Lund University, SE-221 00, Lund, Sweden

Received: 17 March 2010
Revised: 6 May 2010
Accepted: 13 May 2010
Published online: 17 June 2010

Abstract

High-spin states in ¹⁹⁸Tl were studied using the ¹⁹⁷Au(, 3n) reaction. The level scheme was considerably extended including two new bands and several non-yrast levels. One of the new bands is possibly a chiral partner to the yrast h _9/2⊗ i _13/2 ^-1band. Two-quasiparticle-plus-triaxial-rotor model calculations suggest an aplanar orientation of the total angular momenta for these bands, thus supporting possible chirality.