Electron-photon angular correlation measurements for the2Pstate of hydrogen at 35 eV

Abstract

Electron-photon angular correlations have been measured for excitation of the $2P$ states of hydrogen at an incident energy of 35 eV. The data presented relate to electron-scattering angles from ${\theta }_e=8\mathrm{}°$ to ${\theta }_e=120\mathrm{}°$ and yield values for the parameters $\lambda$ and $R$. The experimental results are compared with several theories. In general, none of the theories is found to be adequate at this energy.