Study of photon strength functions via (γ→, γ′, γ″) reactions at the γ3-setup

Johann Isaak, Deniz Savran, Tobias Beck, Udo Gayer, Krishichayan, Bastian Löher, Norbert Pietralla, Marcus Scheck, Werner Tornow, Volker Werner, Andreas Zilges

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

One of the basic ingredients for the modelling of the nucleosynthesis of heavy elements are so-called photon strength functions and the assumption of the Brink-Axel hypothesis. This hypothesis has been studied for many years by numerous experiments using different and complementary reactions. The present manuscript aims to introduce a model-independent approach to study photon strength functions via γ-γ coincidence spectroscopy of photoexcited states in 128Te. The experimental results provide evidence that the photon strength function extracted from photoabsorption cross sections is not in an overall agreement with the one determined from direct transitions to low-lying excited states.
Original languageEnglish
Title of host publication16th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS16)
Subtitle of host publicationShanghai, China, September 8-22, 2017
EditorsYang Sun
PublisherEDP Sciences
Number of pages3
Volume178
DOIs
Publication statusPublished - 16 May 2018

Publication series

NameEPJ Web of Conferences
PublisherEDP Sciences
ISSN (Print)2100-014X

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Isaak, J., Savran, D., Beck, T., Gayer, U., Krishichayan, Löher, B., Pietralla, N., Scheck, M., Tornow, W., Werner, V., & Zilges, A. (2018). Study of photon strength functions via (γ→, γ′, γ″) reactions at the γ3-setup. In Y. Sun (Ed.), 16th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS16): Shanghai, China, September 8-22, 2017 (Vol. 178). [03006] (EPJ Web of Conferences). EDP Sciences. https://doi.org/10.1051/epjconf/201817803006