Energy spectra of secondary electrons ejected by ions from foils

Abstract

Secondary electron spectra in the energy range below 3.5 keV arising from the passage of c~-particles and fission products through thin carbon and gold foils are presented and compared to gas target spectra and theoretical calculations which include the slowing down and the angular scattering of the electrons in the foil. A good agreement between the calculation and the experimental results is found. The shape of fission product induced electron spectra differs systematically from that of light ion induced spectra. Total yields and mean energies of the secondary electrons are derived from the spectra.

Electron Emission from Solids During Ion Bombardment. Theoretical Aspects

“…for v(£) _£-1. the spectrum becomes almost constant, in agreement with experimental observations (FOLKMANN et al .• 1975;PFERDEKAMPER et al .• 1977). Note that the energy dependence of dE/dx follows approximately that of the eLectron-induced secondary-e Lectron yie Ld of the ma teri a 1.…”

Emission of X-ray continua by bombardment of thick Al, Si and Ti targets with protons and14N ions

“…However, the Z~ scaling seems to be violated. As Pferdek~imper et al [14] pointed out no simple scaling with the nuclear charge of the projectile is applicable for secondary electron spectra. Investigating the collision system C+2~ (10-20MeV) Folkmann et al [13] showed that the Z~ z parametrization is fulfilled at least for electrons with energies Eo > T,,.…”