https://doi.org/10.1051/epjconf/202226011010
Measurement of 12C(n,n’) reaction cross section to determine triple-alpha reaction rate in high-density environments
1 Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
2 Department of Physics, Kyoto University, Sakyo, Kyoto 606-8502, Japan
3 Department of Physics, Konan University, Kobe, Hyogo 658-8501, Japan
4 RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
5 Institute for Advanced Synchrotron Light Source, Quantum Scinence and Technology, Sendai, Miyagi 980-8579, Japan
6 Cyclotron and Radio Isotope Center (CYRIC), Tohoku University, Sendai, Miyagi 980-8578, Japan
7 Division of Sustainable Energy and Environmental Engineering, Osaka University, Suita, Osaka 565-0871, Japan
8 Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, Osaka 567-0047, Japan
* e-mail: furuno@ne.phys.sci.osaka-u.ac.jp
Published online: 24 February 2022
The reaction rate of the triple-alpha reaction can be enhanced in hot and dense environments due to the deexcitation of the Hoyle state in 12C by neutrons. The cross section of the deexcitation should be determined for the enhanced reaction rate. We plan to obtain the cross section by measuring the inverse reaction using a neutron beam around 10 MeV and an active target system. In the present paper, we report a proof-of-principle experiment using a neutron beam at 14 MeV. The obtained cross section is consistent with a previous result, demonstrating the validity of our method.
© The Authors, published by EDP Sciences, 2022
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