Title:
ELECTRON GUN DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/015039
Kind Code:
A1
Abstract:
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 (108, 125), 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 (102, 124), 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 (102, 124) to a high temperature; subsequently, the hydrogenated liquid metal is exposed from the cover tube container (102, 124) and forms a liquid surface where the 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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Inventors:
YASUDA HIROSHI (JP)
OOAE YOSHIHISA (JP)
SHIBAOKA TATSUYA (JP)
MURATA HIDEKAZU (JP)
OOAE YOSHIHISA (JP)
SHIBAOKA TATSUYA (JP)
MURATA HIDEKAZU (JP)
Application Number:
PCT/JP2020/027255
Publication Date:
January 28, 2021
Filing Date:
July 13, 2020
Export Citation:
Assignee:
PARAM CORP (JP)
International Classes:
H01J37/06; H01J1/05; H01J1/06; H01J1/10; H01J37/305
Foreign References:
| JPS62140340A | 1987-06-23 | |||
| JPH03233826A | 1991-10-17 | |||
| JPH02195640A | 1990-08-02 | |||
| JPH03272500A | 1991-12-04 | |||
| JPS5838905B2 | 1983-08-26 | |||
| JPS5846542A | 1983-03-18 | |||
| JP5595199B2 | 2014-09-24 |
Other References:
See also references of EP 3923313A4
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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