Differential Recoil Study of the ${}_{}{}^{25}{}_{}{}^{}\mathrm{Mg}(p, 2p){}_{}{}^{24}{}_{}{}^{}\mathrm{Na}$ Reaction

Differential recoil spectra for the ${}_{}{}^{25}{}_{}{}^{}\mathrm{Mg}\mathrm{}(p,2p)\mathrm{}{}_{}{}^{24}{}_{}{}^{}\mathrm{Na}$ reaction have been measured radiochemically at recoil angles of 90 and 60° for an incident energy of 300 MeV and at a recoil angle of 90° for 100-MeV bombarding energy. All the spectra display two peaks. The position of the lower-energy peak seems to remain unchanged with a shift in incident energy, while the higher-energy peak shifts to higher kinetic energies with an increase in bombarding energy. The results are compared with the spectra calculated from a plane-wave impulse-approximation calculation which assumes that only the $1d_{\frac{5}{2}}$ protons in ${}_{}{}^{25}{}_{}{}^{}\mathrm{Mg}$ are available for interaction. Limited agreement is obtained.