The 3He+5He→ α plus α reaction below the Coulomb barrier via the Trojan Horse Method

Spitaleri, C.; Typel, S.; Bertulani, C. A.; Mukhamedzhanov, A. M.; Kajino, T.; Lattuada, M.; Cvetinović, A.; Messina, S.; Guardo, G. L.; Soić, N.; Milin, M.; Perrotta, S. S.; Li, Chengbo; Čolović, P.; D’Agata, G.; Dell’Aquila, D.; Fatuzzo, C. G.; Gulino, M.; Hou, S. Q.; Cognata, M. La; Lattuada, D.; Nurkić, D.; Popočovski, R.; Skukan, N.; Szilner, S.; Trippella, O.; Uroić, M.; Vukman, N. (2021) The 3He+5He→ α plus α reaction below the Coulomb barrier via the Trojan Horse Method. The European Physical Journal Applied Physics, 57 (1). ISSN 1434-6001

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Abstract

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.

Item Type:	Article
Uncontrolled Keywords:	Trojan horse method; quasi-free contribution; approximation; relevant; Li-7
Subjects:	NATURAL SCIENCES NATURAL SCIENCES > Physics
Divisions:	Division of Experimental Physics
Projects:	Project title Project leader Project code Project type Zemljovid atomskih jezgara - neutronski bogata strana-NeRiS-Land Suzana Szilner IP-2018-01-1257 HRZZ Nuklearna struktura i reakcije: eksperimentima prema neutronskoj liniji kapanja-SR-ETNo Suzana Szilner IP-2013-11-7194 HRZZ
Depositing User:	Virna Brumnić
Date Deposited:	17 Apr 2026 08:31
URI:	http://fulir.irb.hr/id/eprint/11748
DOI:	10.1140/epja/s10050-020-00324-4

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