Mass spectrometer

Details Mass spectrometer Mass spectrometer

2007-07-27

2011-12-06

Kim, Robert (Department: 2881)

Radiant energy

Ionic separation or analysis

With sample supply means

C250S281000, C250S42300F, C250S427000

Reexamination Certificate

active

08071941

ABSTRACT:
A cathode configuration for emission of electrons has a reaction zone connected to an entrance opening for the supply of neutral particles. The opening communicates with the cathode configuration for the ionization of the neutral particles and an ion extraction system communicates with the reaction zone. Ions from the extraction system are sent to a detection system and a mechanism for the evacuation of the mass spectrometer arrangement. The cathode configuration includes a field emission cathode with an emitter surface, wherein at a short distance from this emitter surface, an extraction grid is disposed for the extraction of electrons, which grid substantially covers the emitter surface. The emitter surface encompasses herein at least partially a hollow volume such that a tubular structure is formed.

REFERENCES:
patent: 4272699 (1981-06-01), Faubel et al.
patent: 4450031 (1984-05-01), Ono et al.
patent: 4988869 (1991-01-01), Aberth
patent: 2002/0171367 (2002-11-01), Giapis et al.
patent: 2004/0032194 (2004-02-01), Koga
patent: 2005/0077897 (2005-04-01), Syms
patent: 2006/0027764 (2006-02-01), Liu et al.
patent: 2453702 (2011-06-01), None

Affiliated with

Also associated with

Rating

Mass spectrometer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mass spectrometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mass spectrometer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4314246