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:
Oct. 09, 2001
Filed:
Oct. 16, 1998
Steven C. Beu, Austin, TX (US);
Robert W. Arnold, Johnson City, NY (US);
Siemens Energy & Automation, Inc., Alpharetta, GA (US);
Abstract
The ionization efficiency of a mass spectrometer is increased by creating a potential well between the electron source and the electron collector. The potential well is created by applying to the collector a reflection potential having an amplitude which is the same as or substantially the same as the amplitude of the potential applied to the electron source and a polarity which is the same as the polarity of the electron source potential. The potentials applied to the electron source and electron collector are relative to the ionization region effected between the source and collector. Many of the electrons produced by the electron source oscillate back and forth in the potential well thereby allowing those electrons a greater opportunity to interact with sample molecules to thus increase ionization efficiency.