Study of the 6Li(n,)3H reaction via the 2H quasi-free break-up

M Gulino (1, 2) , C Spitaleri (1, 2) , S Cherubini (1, 2) , V Crucillà (1, 2) , M La Cognata (1, 2) , L Lamia (1, 2) , R G Pizzone (2, 1) , S Romano (1, 2) , M L Sergi (1, 2) , A Tumino (1, 3) , Li Chengbo (4) , Z Elekes (5) , E Somorjai (5) , V Burjan (6) , V Kroha (6) , A Mukhamedzhanov (7)

1 INFN Laboratori Nazionali del Sud
2 Unict - Università degli studi di Catania = University of Catania
3 Università degli Studi di Enna " KORE "
4 China Institute of Atomic Energy
5 Institute of Nuclear Research
6 Nuclear Physics Institute [Prague]
7 Cyclotron Institute

The quasi-free break-up of deuteron was used to study the neutron induced 6 Li + n reaction via the 2 H(6 Li, α 3 H)p. The aim of the experiment was to check whether the deuteron can be considered as a source of virtual neutrons. This was done by studying the excitation function of the 6 Li(n, α) 3 H two body reaction at low energy where the resonance corresponding to the excited level at 7.454 MeV of 7 Li is present. Two experimental runs were performed at the Laboratori Nazionali del Sud (LNS) in Catania, Italy. In both experiments, the energy and the position of the outgoing α and 3 H particles were measured and the kinematics were reconstructed assuming a proton as third particle. The quasi-free events were selected in order to reconstruct the 6 Li(n, α) 3 H cross section in the center of mass energy by using the Plane Wave Impulse Approximation approach. The obtained cross section is in very good agreement with the directly measured one.

Mots clés: Physical Sciences

M Gulino, C Spitaleri, S Cherubini, V Crucillà, M La Cognata, et al.. Study of the 6Li(n,)3H reaction via the 2H quasi-free break-up. Journal of Physics G: Nuclear and Particle Physics, 2010, 37 (12), pp.125105. ⟨10.1088/0954-3899/37/12/125105⟩. ⟨hal-00600788⟩