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:
Jul. 10, 2001
Filed:
Dec. 13, 1999
Applicant:
Inventor:
Robert Baptist, Jarrie, FR;
Assignee:
Commissariat A l'Energie Atomique, Paris, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 3/514 ; H01J 3/506 ;
U.S. Cl.
CPC ...
H01J 3/514 ; H01J 3/506 ;
Abstract
An X-ray tube including an electron source and a magnetic guide. The X-ray tube includes at least one electron source, at least one microtip, and an extraction grid, one zone of which emits electrons. Further provided are at least one anode, one zone of which emits X-rays under the impact of the electrons, and a magnetic guiding device for the electrons, capable of creating a magnetic field which is homogeneous at least between the zones. Such an X-ray tube may find application to X-ray absorption analysis or X-ray fluorescence analysis.