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:
Apr. 09, 1991
Filed:
May. 16, 1989
Applicant:
Inventors:
Peter B Back, Canoga Park, CA (US);
Mark W Utlaut, Scappoose, OR (US);
William M Clark, Jr, Thousand Oaks, CA (US);
Assignee:
Hughes Aircraft Company, Los Angeles, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
2504 / ; 313230 ; 313232 ; 3133621 ; 31511181 ; 250424 ;
Abstract
An ion evaporation source for tin ions is prepared by coating a source element with a wettability enhancing gallium coating, and then loading the source with tin. The tin may be the naturally occurring tin, but can be an enriched tin containing a higher concentration of Sn.sup.120. The source produces a beam having a high fraction of Sn.sup.+ and Sn.sup.++ ions, and a small amount of the ionized wettability coating material. All but the desired ions are readily separated from the beam.