Speaker
Dr
Paulus Masiteng
(University of Johannesburg)
Abstract content <br> (Max 300 words)
A study of 194Tl has revealed the presence of two strongly coupled negative-parity rotational bands up to the 24- and 23- states, respectively. These two bands are associated with the two-quasiparticle configuration at lower spins and the four-quasiparticle configuration at higher spins. The two 4-quasiparticle bands show exceptionally close near-degeneracy in the excitation energies as well as close similarity in their alignments and B(M1)/B(E2) reduced transition probability ratios. This is one of the best cases of near degeneracy in partner bands observed to date, probably resulting from a chiral geometry in the angular momentum space. This is the first pair of 4-quasiparticle bands associated with chiral symmetry.
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Primary author
Dr
Paulus Masiteng
(University of Johannesburg)
Co-authors
Dr
Elena Lawrie
(iThemba LABS, National Research Foundation, P.O. Box 722, 7129 Somerset West, South Africa)
Dr
JJ Lawrie
(iThemba LABS, National Research Foundation, P.O. Box 722, 7129 Somerset West, South Africa)
Mr
Marius Ramashidzha
(University of the Western Cape, Private Bag X17, 7535 Bellville, South Africa)
Dr
RA Bark
(iThemba LABS, National Research Foundation, P.O. Box 722, 7129 Somerset West, South Africa)
Dr
SM Mullins
(iThemba LABS, National Research Foundation, P.O. Box 722, 7129 Somerset West, South Africa)
