The Application of the Geiger-Müller Ion Counter to the Study of the Space Distribution of X-ray Photoelectrons

The photographic plate in the apparatus for the magnetic analysis of x-ray photoelectrons has been replaced by a Geiger-Müller ion counter and the magnetic spectrum of the photoelectrons ejected from a thin film of gold by primary x-ray from molybdenum has been studied. Very great resolving power is obtained and considerable precision in determining the exact position of the lines (i.e. the energies of the photoelectrons). The numbers of $L_{\mathrm{III}}$ electrons of gold ejected by the $K{\alpha }_1$ x-ray of molybdenum have been plotted as a function of the angle of ejection and compared with the theoretical longitudinal distribution predicted by Schur.