Effects associated with the inclusion of scattering terms, in the random phase approximation treatment of a two-body interaction at finite temperature, are investigated. Numerical results, for the case of quadrupole excitations in ${}_{}{}^{116}{}_{}{}^{}\mathrm{Sn}$, are discussed. It is found that these terms could influence the low-energy region of the intensity distribution, for multipole excitations at finite temperature.

• Received 26 March 1990

DOI:https://doi.org/10.1103/PhysRevC.42.1335