https://doi.org/10.1140/epja/i2018-12613-4
Regular Article - Experimental Physics
Low-lying positive parity bands in 162Yb
1
University of Zululand, Department of Physics, P/B X1001, 3886, KwaDlangezwa, South Africa
2
University of the Western Cape, Department of Physics, P/B X17, 7535, Bellville, South Africa
3
iThemba LABS, National Research Foundation, PO Box 722, 7129, Somerset-West, South Africa
4
National Metrology Institute of South Africa, DC Low Frequency and Radio Frequency, Lynnwood Ridge, P/B X34, 0040, Pretoria, South Africa
5
University of Stellenbosch, Department of Physics, P/B X1, 7602, Matieland, South Africa
6
University of Johannesburg, Department of Applied Physics and engineering Mathematics, PO Box 17011, 2028, Doornfontein, South Africa
* e-mail: linda.mdletshe@gmail.com
Received:
10
June
2018
Accepted:
17
September
2018
Published online:
16
October
2018
The structure of the low-lying positive parity bands in 162Yb has been studied at iThemba LABS, using the 150Sm(16O,4n)162Yb fusion-evaporation reaction. A band built on the first excited state has been identified for the first time. In addition, we report new rotational levels that form the band structures of both the odd and even spin components of the
-vibrational band. The first excited
band and the even spin members of the
-vibrational band exhibit a Landau-Zenner crossing. This crossing demonstrates that the significant signature splitting between the odd and even spin members of the
band is contributed to by band mixing.
© SIF, Springer-Verlag GmbH Germany, part of Springer Nature, 2018