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:
Jun. 27, 2006
Filed:
Mar. 04, 2005
Bryan Robert Barnard, East Sussex, GB;
Alan Rupert Bayly, West Sussex, GB;
Michael Hugh Humpherson, Surrey, GB;
Bryan Robert Barnard, East Sussex, GB;
Alan Rupert Bayly, West Sussex, GB;
Michael Hugh Humpherson, Surrey, GB;
Thermo Electron Corporation, Waltham, MA (US);
Abstract
A flood gunfor charge neutralization of an analysis region Rof a sample S downstream of the flood gun, comprising: a first sourceof electrons; a second sourceof positively charged particles; and an extraction and focusing assemblyarranged to: (i) extract a first, electron beam from the first source and focus the first beam to a first flood area Aat the analysis region; and (ii) extract a second, positive particle beam from the second source and focus the second beam to a second flood area Aat the analysis region. The electron beam and the positive particle beam may both be extracted and focused simultaneously, in a single mode of operation or, alternately, in a dual mode of operation. A corresponding method of providing charge neutralization and a spectroscopic system for secondary particle emission analysis are disclosed.