| 摘要 |
PROBLEM TO BE SOLVED: To drastically improve the ratio of light discharge current to electric field discharge current, especially in the case of excitation by visible light, by improving an electron beam generator. SOLUTION: The electron beam generator has a light guide (41), a light source (42) connected to one end of the light guide, a film (43) connected to the other end of the light guide for generating electrons and a field generator for lowering the electron work function of the film to make the light discharge current generated. As the film, metal carbide is used.
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