Statistical gamma-ray decay studies at iThemba LABS

M. Wiedeking, L. A. Bernstein, D. L. Bleuel, C. P. Brits, K. Sowazi, A. Görgen, B. L. Goldblum, M. Guttormsen, B. V. Kheswa, A. C. Larsen, S. N.T. Majola, K. L. Malatji, D. Negi, T. Nogwanya, S. Siem, B. R. Zikhali

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


A program to study the γ-ray decay from the region of high-level density has been established at iThemba LABS, where a high-resolution gamma-ray detector array is used in conjunction with silicon particle-telescopes. Results from two recent projects are presented: 1) The 74Ge(α,α′γ) reaction was used to investigate the Pygmy Dipole Resonance. The results were compared to (γ,γ′) data and indicate that the dipole states split into mixed isospin and relatively pure isovector excitations. 2) Data from the 95Mo(d,p) reaction were used to develop a novel method for the determination of spins for low-lying discrete levels utilizing statistical γ-ray decay in the vicinity of the neutron separation energy. These results provide insight into the competition of (γ,n) and (γ,γ′) reactions and highlights the need to correct for angular momentum barrier effects.

Original languageEnglish
Title of host publicationND 2016
Subtitle of host publicationInternational Conference on Nuclear Data for Science and Technology
EditorsPeter Siegler, Wim Mondelaers, Arjan Plompen, Franz-Josef Hambsch, Peter Schillebeeckx, Stefan Kopecky, Jan Heyse, Stephan Oberstedt
PublisherEDP Sciences
ISBN (Electronic)9782759890200
Publication statusPublished - 13 Sept 2017
Externally publishedYes
Event2016 International Conference on Nuclear Data for Science and Technology, ND 2016 - Bruges, Belgium
Duration: 11 Sept 201616 Sept 2016

Publication series

NameEPJ Web of Conferences
ISSN (Print)2101-6275
ISSN (Electronic)2100-014X


Conference2016 International Conference on Nuclear Data for Science and Technology, ND 2016

ASJC Scopus subject areas

  • General Physics and Astronomy


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