Quasifree proton-proton and proton-deuteron scattering cross sections on ${}_{}{}^4{}_{}{}^{}\mathrm{He}$ have been measured and compared with theoretical calculations in the distorted wave impulse approximation. Information on the low components for the proton and deuteron momentum distributions in ${}_{}{}^4{}_{}{}^{}\mathrm{He}$ are deduced.

NUCLEAR REACTIONS ${}_{}{}^4{}_{}{}^{}\mathrm{He}(p, 2p)$ and ${}_{}{}^4{}_{}{}^{}\mathrm{He}(p, pd)$, $E=156\mathrm{}$ MeV; measured $\sigma (E_1, E_2, {\theta }_1, {\theta }_2)$; proton and deuteron momentum distributions in ${}_{}{}^4{}_{}{}^{}\mathrm{He}$ deduced.

• Received 17 March 1975

DOI:https://doi.org/10.1103/PhysRevC.12.243