Effect of Core Polarization in the ReactionBi209(p, p)Bi209(1.61 MeV)AT 39.5 MeV

Abstract
The cross section for the 1h921i132 single-proton transition in the reaction Bi209(p, p)Bi*209 at 39.5 MeV has been measured. It is shown that most of the observed cross section is due to admixtures of the state formed by coupling the valence proton of Bi209 to the highly collective 3 state of Pb208 at 2.614 MeV. An estimate of core polarization, based on the work of Kuo and Brown, grossly underestimates the L=3 component of the cross section.