https://doi.org/10.1140/epja/i2019-12866-3
Regular Article - Experimental Physics
New collective structures in the 163Yb nucleus
1
University of the Western Cape, Department of Physics, P/B X17, 7535, Bellville, South Africa
2
iThemba Laboratory for Accelerator Based Sciences, National Research Foundation, PO Box 722, 7129, Somerset-West, South Africa
3
University of Zululand, Department of Physics, P/B X1001, 3886, KwaDlangezwa, South Africa
4
University of Johannesburg, Department of Physics, PO Box 524, 2006, Auckland Park, South Africa
5
University of Stellenbosch, Department of Physics, P/B X1, 7602, Matieland, South Africa
6
RF Section, NMISA, Lynnwood Ridge, P/B X34, 0040, Pretoria, South Africa
* e-mail: sitholemakuhaneabel@gmail.com
Received:
10
April
2019
Accepted:
26
August
2019
Published online:
17
October
2019
The 152Sm(16O, 5n)163Yb reaction at a beam energy of 93 MeV was used to study the excited states of 163Yb with the AFRODITE 
-ray spectrometer at iThemba LABS. The level scheme of 163Yb has been extended and new rotational bands established. The band based on the ground-state has been extended from a spin of 11/2- to spin 43/2-. A high-K band based on the neutron [505]11/2- Nilsson orbital has been observed and is reported for the first time in this work. Additional new states in 163Yb were observed which all decay to the yrast band. Some of these states are placed in a sequence which is conjectured to be a 
band involving a coupling with the i
13/2[642]5/2+ neutron orbital. The band structures are discussed with reference to Cranked Shell Model (CSM) calculations and a systematic comparison with the neighbouring nuclei.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2019
