Forward angle spectra of the ${}_{}{}^{208}{}_{}{}^{}(\mathit{p}$,n) reaction at $E_p$=200 MeV are analyzed within a microscopic model assuming that the measured cross section is a result of correlated one-particle–one-hole spin-isospin transitions only. We find that the data are essentially in agreement with the strength predictions of the random-phase approximation. We also find that the observed shapes of the spectra can only be explained by introducing a strongly asymmetric damping of the collective spin-flip modes.

• Received 22 September 1988

DOI:https://doi.org/10.1103/PhysRevC.39.694