Validity test of 20Ne as a Trojan Horse nucleus toward the measurement of the 16O+16O fusion cross section
Hayakawa S. Typel S. La Cognata M. Chieffi A. Di Pietro A. Fernández-García J.P. Figuera P. Limongi M. Lamia L. Pizzone R.G. Burtebayev N. Spitaleri C. Aimaganbetov A. Amangeldi N. Fisichella M. Guardo G.L. Igamov S. Indelicato I. Kiss G.G. Kliczewski S. Lattuada D. Lattuada M. Nassurlla M. Nassurlla M. Oliva A. Piasecki E. Rapisarda G.G. Romano S. Sakuta S.B. Sergi M.L. Siudak R. Spartá R. Trzcińska A. Tumino A. Urkinbayev A.
January 2026Springer
European Physical Journal A
2026#62Issue 1
The 16O+16O fusion reaction is important for understanding explosive oxygen burning during late evolutionary stages of massive stars as well as for understanding low-energy heavy-ion fusion-reaction mechanism. This paper represents the first step to determine the excitation function for the major exit channels, α+28Si and p+31P, toward stellar energies indirectly by the Trojan Horse Method via the 16O(20Ne,α28Si)4He and 16O(20Ne,p31P)4He three-body reactions. Indeed, here we report on a validity test of the approach showing, for the first time, the possibility to use 20Ne as Trojan Horse nucleus. Results on the reaction channel identification and reaction mechanism determination, with particular emphasis on the momentum distribution of the α-16O inter-cluster motion in the projectile 20Ne nucleus are thoroughly discussed. Fair agreements of the present results with theoretical predictions indicate a possibility to identify the quasi-free process, which is the first step for the application of the Trojan Horse method to independently measure the 16O+16O fusion cross section in the next future.
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Center for Nuclear Study (CNS), University of Tokyo, RIKEN Campus, Saitama, Wako, 351-0198, Japan
Fachbereich Physik, Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, 64289, Germany
Theorie, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany
Laboratori Nazionali del Sud, Istituto Nazionale di Fisica Nucleare, Catania, 95123, Italy
Istituto di Astrofisica e Planetologia Spaziali, Istituto Nazionale di Astrofisica, Rome, 00040, Italy
Monash Centre for Astrophysics (MoCA), School of Mathematical Sciences, Monash University, Melbourne, 3800, VIC, Australia
Sezione di Perugia, Istituto Nazionale di Fisica Nucleare, Perugia, 06125, Italy
Departamento FAMN, Universidad de Sevilla, Apartado 1065, Sevilla, 41080, Spain
Osservatorio Astronomico di Roma, Istituto Nazionale di Astrofisica, Monteporzio Catone, 00040, Italy
Kavli Institute for the Physics and Mathematics of the Universe, Todai Institutes for Advanced Study, The University of Tokyo, Kashiwa, 277-8583, Japan
Department of Physics and Astronomy “Ettore Majorana”, University of Catania, Catania, 95123, Italy
Centro Siciliano di Fisica Nucleare e Struttura della Materia (CSFNSM), Catania, 95123, Italy
Institute of Nuclear Physics, Ministry of Energy of the Republic of Kazakhstan, Almaty, 050032, Kazakhstan
L.N. Gumilyov Eurasian National University, Astana, 010008, Kazakhstan
Institute of Nuclear Physics, Uzbek Academy of Sciences, Tashkent, 100214, Uzbekistan
Institute of Nuclear Research (ATOMKI), Debrecen, 4001, Hungary
Niewodniczański Institute of Nuclear Physics, Kraków, 31-342, Poland
Kore University, Enna, 94100, Italy
Heavy Ion Laboratory, University of Warsaw, Warszawa, 02-093, Poland
Center for Nuclear Study (CNS)
Fachbereich Physik
Theorie
Laboratori Nazionali del Sud
Istituto di Astrofisica e Planetologia Spaziali
Monash Centre for Astrophysics (MoCA)
Sezione di Perugia
Departamento FAMN
Osservatorio Astronomico di Roma
Kavli Institute for the Physics and Mathematics of the Universe
Department of Physics and Astronomy “Ettore Majorana”
Centro Siciliano di Fisica Nucleare e Struttura della Materia (CSFNSM)
Institute of Nuclear Physics
L.N. Gumilyov Eurasian National University
Institute of Nuclear Physics
Institute of Nuclear Research (ATOMKI)
Niewodniczański Institute of Nuclear Physics
Kore University
Heavy Ion Laboratory
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