Papers by Keyword: Electron Scattering

Abstract: Properties of fully ionized plasmas are discussed including plasma charge density oscillations and the screening of Coulombs law especially in the dilute classical Debye regime. In a kinetic model with two charged particle scattering events in the Boltzmann collision rates, the rate of electron capture induced plasma nuclear reactions is exhibited and veri es our previous results based on condensed matter electro-weak quantum eld theory.

Abstract: In Generation III image intensifier tubes, the input of the microchannel plate is typically coated with a thin Al2O3 film to prevent ions penetrating and damaging the delicate Cs-O activation layer of GaAs cathode. While the application of an ion barrier film to the MCP greatly improves the mean time to failure of the image intensifier tube, it unfortunately produces electron scattering to cause a significant degradation in the Modulation Transfer Function and resolution of the image tubes. To obtain an overview of the role of the ion barrier in Generation III image intensifiers, in this paper, we present the results of a Monte Carlo simulation on scattering electron transport through Al2O3 film with various photocathode voltage, density, thickness, and stoichiometry. Using Monte Carlo simulation on scattering electron ways, we get the MTF curve of film at the accelerating voltage of 400v, a thickness of 10nm, and a density of 0.3 g/cm3. The simulation results play an important role on optimizing the quality and facture technique of ion barrier film.

Abstract: We have calculated angular and energy loss distributions of electrons transmitted through masks for electron projection lithography by using a Monte Carlo simulation method. The angular and energy loss distributions are much wider in the mask stack than those in the membrane layer. The large non-scattering and non-energy-loss probabilities are also found for the membrane layer. High contrast image can thus be achieved within a small size of aperture.