Energy Distribution of Secondary-Electron Emission

Exploring the absolute yield curve of secondary electrons using machine learning methods

“…The training database consists of the measured SEY data 6–27,30,83–90,92–103 tabulated in Table 1. The table presents the elements studied, energy range, vacuum conditions and surface treatment techniques (if any).…”

“…The table presents the elements studied, energy range, vacuum conditions and surface treatment techniques (if any). We have taken the old data 5,30,83–103 published during 1931–2003 from Joy's compilation of electron–solid interactions 5 and the newly published data in the last two decades. 6–27 The database comprises SEY values for 46 elements over the energy range of 50 eV–30 keV; it shows large variations among the different measurements for the same element.…”

“…Among the old published data, only the Bronstein's 98 data are more systematic and are available for 22 elements, and are believed to be better as the samples were prepared by in situ evaporation in a relatively good vacuum. Most of the other old measurements 5,30,83–103 have been carried out in poor vacuum conditions and the sample surfaces were contaminated in most of the cases. The experimental techniques have been advanced greatly over the last two decades and the measurements have been performed in multifunctional UHV measuring systems by using various surface treatment techniques.…”