Param Corporation

Tatsuya Shibaoka

Hiroshi Yasuda

Yoshihisa Ooae

Hidekazu Murata

An electron gun device according to the present invention emits an electron beam by means of heating to a high temperature in a vacuum. According to the present invention, the surface of a material (), which emits an electron beam, is a hydrogenated metal that is melted and in a liquid state during a high-temperature operation; the liquid hydrogenated metal is contained in a hollow cover tube container (), which is in a solid state during the high-temperature operation, in the form of a hydrogenated liquid metal or in the form of a liquid metal before hydrogenation, and heated together with the cover tube container () to a high temperature; subsequently, the hydrogenated liquid metal is exposed from the cover tube container () and forms a liquid surface where gravity, the electric field and the surface tension of the liquid surface are balanced; and an electron beam is emitted from the exposed surface of the hydrogenated liquid metal.

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Tokyo, Japan

Tatsuya Shibaoka