CROSS-SECTION MEASUREMENTS FOR THE H-2(G,N)2P REACTION AT 135 MEV

Cross-section excitation-energy spectra and angular distributions were measured for the H-2(p,n)2p reaction at 135 MeV in 6 degrees steps fr om 0 degrees to 30 degrees (laboratory), using the beam swinger facili ty at the Indiana University Cyclotron Facility. The target was a 12.8 mg/cm(2) foil of CD2. Neutron energies were measured by the One-of-fl ight method using large-volume plastic scintillator arrays at flight p aths of 91 m. The overall energy resolution was 260 keV. The 0 degrees spectrum is dominated by a large peak near 0 MeV of relative energy i n the final 2p system; this peak corresponds to the two protons. in th e S-1(0) state. The wider-angle spectra are dominated by a broad peak centered at 10 to 20 MeV of excitation which is the quasifree scatteri ng peak. The spectra are compared with impulse approximation and three -body Faddeev calculations.