Numerical simulation of electron trajectories for EELS

• L. Vattuoneb ^[1] ; M. Repettoa ^[1] ; M. Roccab ^[1]
  1. [1] Centro di Fisica delle superfici e delle basse temperature Dipartimento di Fisica, Università di Genova, Italia
• Localización: Compel: International journal for computation and mathematics in electrical and electronic engineering, ISSN 0332-1649, Vol. 11, Nº 1, 1992, págs. 85-88
• Idioma: inglés
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• Resumen

  • Electron energy loss spectrometers (EELS) for surface studies require a high energy resolution (▵E ? 3 meV) monochromatic electron beam with the highest possible current. In order to improve the transmission of such a device, and so the achievable current, a 3D simulation of electron trajectories taking into account space charge effects was performed for typical three lenses cathode systems, electrostatic cylindrical deflector analyzer (CDA 127°) and acceleration lenses. The results of the analysis are presented and their effects on the overall design of the device are discussed.