Abstract
A study of photon emission induced by electron impact on the GeH4 molecule was conducted using an electron beam collision apparatus. The optical excitation functions of Ge I, Ge II, GeH, and H excited fragments were measured in the 0–100 eV electron energy range. The appearance potentials of the fragment emissions were determined and these values were compared with the dissociation limits of the possible processes. The absolute emission cross sections of excited fragments were measured by means of the helium bench-mark cross sections.