https://doi.org/10.1140/epja/s10050-024-01337-z
Regular Article - Experimental Physics
First observation of rotational bands in the nucleus U
1
Department of Physics and Electronics, Rhodes University, 6140, Grahamstown, South Africa
2
iThemba LABS, National Research Foundation, P. O. Box 722, Somerset West 7129, Grahamstown, South Africa
3
Department of Physics, University of the Western Cape, Private Bag X17, 7535, Bellville, South Africa
4
Department of Physics, University of Zululand, Private Bag X1001, 3886, KwaDlangezwa, South Africa
5
Department of Physics, University of Johannesburg, P. O. Box 524, 2006, Auckland Park, South Africa
6
Department of Physics, Manipal Institute of Technology, Manipal Academy of Higher Education, 576104, Manipal, Karnataka, India
7
Department of Physics, University of Stellenbosch, Stellenbosch, South Africa
8
Department of Mathematics, Sciences and Physical Education, University of Rwanda, 50 Rwamagana, Rwanda, Rwanda
Received:
29
February
2024
Accepted:
11
May
2024
Published online:
29
May
2024
This work reports the first rotational bands observed in the neutron-deficient nucleus U. Excited states were populated in the Th(,5n) reaction at a beam energy of 52 MeV. Coincident decay -rays were measured with the high-purity germanium detectors of the afrodite spectrometer array, in conjunction with a recoil detector to discriminate against the fission background. The bands are interpreted as the ground-state band , yrast band , and an excited band . Configuration assignments are supported by Cranked Shell Model and B(M1)/B(E2) calculations. The excitation energy of the bandhead is suggested to be 113.0 keV.
© The Author(s) 2024
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