The He-3+He-5 -> alpha plus alpha reaction below the Coulomb barrier via the Trojan Horse Method

0539481 - ÚJF 2022 RIV US eng J - Článek v odborném periodiku
Spitaleri, C. - Typel, S. - Bertulani, C. A. - Mukhamedzhanov, A. M. - Kajino, T. - Lattuada, M. - Cvetinovic, A. - Messina, S. - Guardo, G. L. - Soic, N. - Milin, M. - Perrotta, S. - Li, C. B. - Colovic, P. - D'Agata, Giuseppe - Dell'Aquila, D. - Fatuzzo, C. G. - Gulino, M. - Hou, S. Q. - La Cognata, M. - Lattuada, D. - Nurkic, D. - Popocovski, R. - Skukan, N. - Szilner, S. - Trippella, O. - Uroic, M. - Vukman, N.
The He-3+He-5 -> alpha plus alpha reaction below the Coulomb barrier via the Trojan Horse Method.
European Physical Journal A. Roč. 57, č. 1 (2021), č. článku 20. ISSN 1434-6001. E-ISSN 1434-601X
Institucionální podpora: RVO:61389005
Klíčová slova: nuclear reactions * Trojan Horse Method * cross section
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 3.131, rok: 2021
Způsob publikování: Omezený přístup
https://doi.org/10.1140/epja/s10050-020-00324-4

For the first time in an application to nuclear astrophysics, a process induced by the unstable He-5 = (He-4-n) nucleus, the He-3+He-5 -> 2 alpha reaction, has been studied through the Trojan Horse Method (THM). For that purpose, the quasi-free (QF) contribution of the Be-9(He-3,alpha alpha)He-4 reaction was selected at E3He = 4 MeV incident energy. The reaction was studied in a kinematically complete experiment following a recent publication (Spitaleri et al. in Eur Phys J A 56:18, 2020), where for the quasi free contribution the momentum distribution between alpha and He-5 particle cluster in the Be-9 nucleus in the ground state have been extracted. The angular distribution of the QF He-3+He-5 -> 2 alpha reaction was measured at theta(cm) = 78 degrees-115 degrees. The energy dependence of the differential cross section of the He-3+He-5 -> 2 alpha virtual reaction was extracted in the energy range E-cm = 0-650 keV. The total cross section obtained from the Trojan-horse methodwas normalized to absolute cross sections from a theoretical calculation in the energy range E-cm =300-620 keV.
Trvalý link: http://hdl.handle.net/11104/0317216