Compton scattering from Li6 at 86 MeV

Abstract

Cross sections for 6Li(γ,γ) 6Li have been measured at the High Intensity Gamma-Ray Source (HI~γS) and the sensitivity of these cross sections to the nucleon isoscalar polarizabilities was studied. Data were collected using a quasi-monoenergetic 86 MeV photon beam at photon scattering angles of 40◦ –160◦ . These results are an extension of a previous measurement at a lower energy. The earlier work indicated that the 6Li(γ,γ) 6Li reaction at 60 MeV provides a means of extracting the nucleon polarizabilities; this work demonstrates that the sensitivity of the cross section to the polarizabilities is increased at 86 MeV. A full theoretical treatment is needed to verify this conclusion and produce values of the polarizabilities.