Indirect Study of the 2H(d,p)3H and 2H(d,n)3He Reactions at Astrophysical Energies via the Trojan Horse Method

The 2 H(d,p) 3 H and 2 H(d,n) 3 He reactions have been indirectly studied by means of the Trojan Horse Method applied to the quasi-free 2 H( 3 He, p 3 H) 1 H 2 H( 3 He, n 3 He) 1 H reaction at 18 MeV of beam energy. This is the first experiment where the spectator (here 1 H) has been detected in coincidence with the charged participant, avoiding the limitations of standard neutron detectors. The d − d relative energy has been measured from 1.5 MeV down to 2 keV, at center of mass angles from 40° to 170°. Indirect angular distributions are compared with the direct behaviour in the overlapping regions.