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:
Mar. 28, 2017
Filed:
Feb. 03, 2016
The Charles Stark Draper Laboratory Inc., Cambridge, MA (US);
Erkinjon G. Nazarov, Lexington, MA (US);
Spiros Z. Manolakos, Palm Harbor, FL (US);
Francy L. Sinatra, Temple Terrace, FL (US);
Timothy A. Postlethwaite, Oldsmar, FL (US);
Kenneth A. Markoski, Westford, MA (US);
Clayton J. Morris, II, Norfolk, MA (US);
The Charles Stark Draper Laboratory Inc., Cambridge, MA (US);
Abstract
A non-radioactive plasma ion source device includes at least four planar electrodes that define at least three chambers, including a discharger chamber and at least two additional chambers aligned along a major longitudinal axis of the housing. A discharger ionizes at least one of a transport gas and a discharge gas to form ions in the discharger chamber that are directed by a homogeneous electric field generated by the planar electrodes toward an analyte gas outlet. Ionized species of at least one of the transport gas and the discharge gas that are not entrained by a counterflow gas stream are discharged from the discharger chamber to form a stream of ionized particles that ionize a sample gas and thereby form a stream of ionized analyte particles of the same polarity. The ionized analyte particles are entrained with the stream of ionized particles and pass through an analyte gas outlet to an analyzer.