A new energy-dependent-core model for attenuation effects in quasifree scattering is used to explain the difference in quasifree scattering cross sections for the two kinematically equivalent modes of deuteron breakup under proton bombardment.

NUCLEAR REACTIONS ${}_{}{}^2{}_{}{}^{}\mathrm{H}(p, pp)$, ($p, \mathrm{pn}$), $E=20-100\mathrm{}$ MeV; ${}_{}{}^4{}_{}{}^{}\mathrm{He}(p, pt)$, ($p, p{}_{}{}^3{}_{}{}^{}\mathrm{He}$), $E=47\mathrm{}$ MeV; calculated $\sigma$.

• Received 23 September 1974

DOI:https://doi.org/10.1103/PhysRevC.11.634