Efficiencies of TSEE Excited by Various Types of Ionizing Radiation

The efficiency of thermally stimulated exoelectron emission (TSEE) was studied for the surfaces of exoelectron materials excited by α, β and γ-rays. The measured efficiencies correspond reasonably well with the mean dE/dx of a surface thin layer. There remain problems regarding the counting efficiency of the 2π flow counter system and the number of the missing exoelectrons that escaped before a measurement. Regarding the β-ray excited group, it can be concluded that the origin of the observed exoelectrons was in a thin surface layer with a thickness of several hundred angstroms and that the contribution of the bulk origin was negligible.