Mechanism of the93Nb(p⃗,3He) inclusive reaction at an incident energy of 160 MeV

Abstract

The inclusive ${}^{93}$Nb($\stackrel{P\vec}{p}{,}^{3}$He) reaction to the continuum was investigated at an incident energy of 160 MeV. Emission-energy distributions for cross sections as well as analyzing powers were explored. A range of scattering angles from 15${}^{\ensuremath{\circ}}$ to 60${}^{\ensuremath{\circ}}$ (lab.) was covered and ${}^{3}$He emission energies from $\ensuremath{\approx}\phantom{\rule{-0.16em}{0ex}}30$ MeV to the kinematic limit were measured. As in our earlier work, the experimental distributions were compared with a multistep direct theory in which a reaction mechanism based on two-nucleon pickup is employed. Reasonable agreement between experimental double-differential cross sections and analyzing powers and the theoretical expectation was obtained. This work, together with published results for the same reaction at a lower projectile energy, allows the incident-energy dependence of the cross section and analyzing power distributions to be explored.