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. 17, 1992
Filed:
Oct. 22, 1991
Applicant:
Inventors:
Stephen P Thompson, Downham Market, GB;
Mark G Dowsett, Balsall Common, GB;
Assignee:
Kratos Analytical, Limited, Urmston, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
250288 ; 250294 ; 250296 ; 250309 ; 2503 / ;
Abstract
An arrangement is described for extracting charged particles which have been emitted from a sample due to the impact of a primary ion beam. The arrangement comprises an electrode arrangement effective to produce an electric potential which is non-linear along a chosen direction of travel of the particles. A system of einzel lenses is effective to match the trajectories of the particles passing from the electrode means to the analyser of a mass spectrometer.