Astrophysical S-factor for the 2H(ρ,γ)3He reaction at big-bang nucleosynthesis energies

Isabela Tišma; Matej Lipoglavšek; Miha Mihoviloviĉ; Sabina Markelj; Matjaž Vencelj; Jelena Vesić

doi:10.1051/epjconf/202022702015

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Volume 227 (2020)

EPJ Web Conf., 227 (2020) 02015

Abstract

Open Access

Issue		EPJ Web Conf. Volume 227, 2020 10^th European Summer School on Experimental Nuclear Astrophysics


Article Number		02015
Number of page(s)		4
Section		Session 2: Contribution by Young Researchers
DOI		https://doi.org/10.1051/epjconf/202022702015
Published online		14 January 2020

EPJ Web of Conferences 227, 02015 (2020)
https://doi.org/10.1051/epjconf/202022702015

Astrophysical S-factor for the ²H(ρ,γ)³He reaction at big-bang nucleosynthesis energies

Isabela Tišma¹^*, Matej Lipoglavšek¹, Miha Mihoviloviĉ¹^,2^,3, Sabina Markelj¹, Matjaž Vencelj¹ and Jelena Vesić¹^,4

¹ Jozef Stefan Institute, SI-1000 Ljubljana, Slovenia
² Faculty of Mathematics and Physics, University of Ljubljana, SI-1000 Ljubljana, Slovenia
³ Institutfur Kernphysik, Johannes Gutenberg-Universitat Mainz, DE-55128 Mainz, Germany
⁴ GSI Helmholtzzentrum fur Schwerionenforschung GmbH, DE-64291 Darmstadt, Germany

^* e-mail: isabela.tisma@ijs.si

Published online: 14 January 2020

Abstract

We report on our latest experimental study of the ²H(ρ,γ)³He reaction in the energy range of interest for big-bang nucleosynthesis. The differential cross section at 135° and γ)-ray angular distributions were measured and compared with the results deduced from the latest ab-initio calculation. The astrophysical S-factor for the ²H(ρ,γ)³He reaction was obtained in the center-of-mass energy range E = 97-210 keV, and it is found to be in reasonable agreement with that predicted by the ab-initio calculation.

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