SAIP2025

Systematics review of low-lying positive parity structures in the 160 mass region.

11 Jul 2025, 10:00

20m

Solomon Mahlangu House (University of the Witwatersrand, Johannesburg)

Oral Presentation Track B - Nuclear, Particle and Radiation Physics Nuclear, Particle and Radiation Physics-1

Speaker

Siyabonga Majola (University of Johannesburg)

Description

For decades now, the low-lying first excited 0+ bands have been attributed to “β -vibrations”, following the seminal works of Bohr and Mottelson [1, 2]. Recent discoveries have demonstrated that these bands could arise due to other modes excitations, such as quadrupole pairing [3] and shape-coexistence [4].

The current work performs a systematics review of low-lying structures in the 160 mass region. In particular, this work focus on the structural behaviour of bands built on the first excited 0+ and 2+ bands, which are traditionally understood as β and γ bands, respectively. The results of the systematic review are presented and the implications of the findings are there from discussed.

Reference

[1] A. Bohr, Mat. Fys. Medd. Dan. Vid. Selsk. 26, 14 (1952).
[2] A. Bohr and B. R. Mottelson, Mat. Fys. Medd. Dan. Vid. Selsk. 27, 16 (1953).
[3] J.F. Sharpey-Schafer et al., European Physical Journal A (2019)55:15
[4] K. Heyde and J. L. Wood, Reviews of Modern Physics 83, 1467 (2011).
[5] P.E. Garrett, J Phys. G: Nucl. Part. Phys. 27, R1 (2001).