Radiative proton capture on $^6$He

E. Sauvan (1) , F.M. Marqués (1) , H. W. Wilschut , N.A. Orr (1) , J.C. Angélique (1) , C. Borcea , W. N. Catford , N. M. Clarke , P. Descouvemont , J. Diaz , S. Grévy (1) , A. Kugler , V. Kravchuk , M. Labiche (1) , C. Le Brun (1) , E. Liénard (1) , H. Löhner , W. Mittig (2) , R. W. Ostendorf , S. Piétri (1) , P. Roussel-Chomaz (2) , M.G. Saint-Laurent (2) , H. Savajols (2) , V. Wagner , N. Yahlali

1 LPCC - Laboratoire de physique corpusculaire de Caen
2 GANIL - Grand Accélérateur National d'Ions Lourds

Radiative capture of protons is investigated as a probe of clustering in nuclei far from stability. The first such measurement on a halo nucleus is reported here for the reaction $^6$He(p,$\gamma$) at 40 MeV. Capture into $^7$Li is observed as the strongest channel. In addition, events have been recorded that may be described by quasi-free capture on a halo neutron, the $\alpha$ core and $^5$He. The possibility of describing such events by capture into the continuum of $^7$Li is also discussed.

Domaines: Physique Nucléaire Expérimentale [nucl-ex]

E. Sauvan, F.M. Marqués, H. W. Wilschut, N.A. Orr, J.C. Angélique, et al.. Radiative proton capture on $^6$He. Physical Review Letters, 2001, 87, pp.042501. ⟨10.1103/PhysRevLett.87.042501⟩. ⟨hal-00112249⟩