Investigations on ion transmission characteristics of the ion barrier films in Generation III image tubes

The stopping power of ion barrier films (IBFs) of Microchannel Plate (MCP) in Generation III image tubes for incident positive ions was described in this paper. Nuclear Stopping Power, Electronic Stopping Power and Mean Range were introduced. These concepts were analyzed and discussed, combined with Tomas-Fermi shielding potential. The results of a Monte Carlo simulation on Nuclear Stopping Power, Electronic Stopping Power and Mean Range were also presented when the ions with different energies were perpendicularly incident to Al 2 O 3 and SiO 2 films. The results indicate that the stopping power of Al 2 O 3 film is stronger than that of SiO 2 , and the selection of Al 2 O 3 is reasonable and feasible.