The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 16, 1999
Filed:
Jan. 30, 1998
Applicant:
Inventor:
Susumu Nishihara, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05H / ;
U.S. Cl.
CPC ...
315505 ; 315507 ;
Abstract
In order to obtain a linear electron accelerator having enhanced beam performance, a thermion emitting face 11 of a cathode 10 is enclosed by carbon 17. Consequently, distribution of an electric field 30 for leading out electrons becomes parallel with the thermion emitting face 11. Therefore, electron beams emitted from the thermion emitting face 11 become streamlines parallel with each other. Thus, the beam performance of the linear electron accelerator can be enhanced.