A microscopic formulation of the nucleon-nucleus imaginary inelastic form factor using particle-hole intermediate states gives a result which is roughly the real form factor times a function consisting of intermediate particle- and hole-scattering terms. These terms have opposite signs, allowing the possibility of a radial dependence for the form factor similar to the collective model. Numerical results for 30 MeV ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}(n,n^{\prime }){}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}(3^{-},3.73\mathrm{} \mathrm{MeV})$ scattering are compared with the collective model.

[NUCLEAR REACTIONS Inelastic scattering, microscopic calculation of imaginary form factor for ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}(n,n^{\prime }){}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}(3^{-},3.73\mathrm{} \mathrm{MeV})$.]

• Received 28 April 1977

DOI:https://doi.org/10.1103/PhysRevC.17.819