Cross section and analyzing power measurements are presented for ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$(p,p') inelastic scattering to the first excited $2^{+}$ state at $E_x=4.44\mathrm{}$ MeV in ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ at bombarding energies of 122, 160, and 200 MeV. The angular range up to ${\theta }_{\mathrm{c}.\mathrm{m}.\mathrm{}}=156\mathrm{}°$, corresponding to a momentum transfer of ∼1100 MeV/c, was measured. An analysis using the distorted-wave $t$-matrix approximation with density dependent interactions has been carried out. Calculations using different representations of the effective $t$ matrix demonstrate that measurements at large momentum transfer are sensitive to the off-shell behavior of the interaction. We find, however, that other input parameters to the model, such as distorting potentials or transition densities, are also important.

NUCLEAR REACTIONS ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$${\mathrm{}(\mathrm{p},\mathrm{p}\text{'})\mathrm{}}^{12}$C ($E_x=4.44\mathrm{}$ MeV), $E=122, 160, 200$ MeV, measured $\sigma (E, \theta )$, $A(E, \theta )$, $\theta =6\mathrm{}°-156\mathrm{}°$. DWTA analysis. Density dependent interaction.

• Received 4 February 1983

DOI:https://doi.org/10.1103/PhysRevC.28.1