Angular Distribution of Gamma Rays in Coulomb Excitation from Pt

A numerical calculation has been made of the angular correlation coefficient, a₂(ξ), in Coulomb excitation in both the quantum-mechanical treatment and the semiclassical approximation. The parameters ξ and η were chosen to correspond to excitation of the 330-kev level of Pt¹⁹⁴. The radial integrals entering the quantum calculation have been evaluated in the semiclassical approximation. Both the classical and quantum calculations are found to reproduce the experimentally observed energy dependence of a₂(ξ), and the quantum treatment gives rather satisfactory agreement with the experimental absolute values as well.