Practical calculations of stopping powers for intermediate energy electrons in some elemental solids

Gumus H., Kabadayı Ö.

VACUUM, cilt.85, sa.2, ss.245-252, 2010 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 85 Sayı: 2
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.vacuum.2010.06.004
  • Dergi Adı: VACUUM
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.245-252
  • Anahtar Kelimeler: Bohr adiabatic criterion, Effective charge, Electron stopping power, Tietz screening function, MEAN FREE PATHS, FORMULA, SIMULATION, SCATTERING, ALUMINUM
  • Ondokuz Mayıs Üniversitesi Adresli: Evet

Özet

This study presents calculation results of the stopping power (SP) of electrons of kinetic energy from 10 eV to 100 key for some elemental solids. The method is based on utilization of the modified Bethe-Bloch SP expression and analytical expression for effective atomic electron number and effective mean excitation energies of target atoms, and for effective charge of incoming electrons, Sugiyama's semi-empirical formula is embedded in the formula. An analytical expression for the practical SP calculations using Bethe approximation and Thomas Fermi model of atom is taken from an pervious study and the calculated results of the SPs from this formula for electrons in some elemental solids, such as Al, Si, Cr, Ni, Cu, Ge, Pd, Ag, Pt, and Au, are calculated and rigorously compared with experimental data, Penelope code results and with results of other calculations such as the non-relativistic Bethe SP equation and the empirical modification of the Bethe equation by Joy and Luo. The results are found to be in good agreement for some targets but some limited agreement for some energies and targets is also observed. (C) 2010 Elsevier Ltd. All rights reserved.