Carbon nanotube electron ionization sources

Details Carbon nanotube electron ionization sources Carbon nanotube electron ionization sources

2005-04-26

2005-04-26

Wells, Nikita (Department: 2881)

Radiant energy

Ion generation

Electron bombardment type

C250S42300F, C313S309000, C313S311000, C313S34600R

Reexamination Certificate

active

06885010

ABSTRACT:
An ion source for use in a mass spectrometer includes an electron emitter assembly configured to emit electron beams, wherein the electron emitter assembly comprises carbon nanotube bundles fixed to a substrate for emitting the electron beams, a first control grid configured to control emission of the electron beams, and a second control grid configured to control energies of the electron beams; an ionization chamber having an electron-beam inlet to allow the electron beams to enter the ionization chamber, a sample inlet for sample introduction, and an ion-beam outlet to provide an exit for ionized sample molecules; an electron lens disposed between the electron emitter assembly and the ionization chamber to focus the electron beams; and at least one electrode disposed proximate the ion-beam outlet to focus the ionized sample molecules exiting the ionization chamber.

REFERENCES:
patent: 5543625 (1996-08-01), Johnson et al.
patent: 5852295 (1998-12-01), Da Silveira et al.
patent: 6080985 (2000-06-01), Welkie et al.
patent: 6232706 (2001-05-01), Dai et al.
patent: 6333016 (2001-12-01), Resasco et al.
patent: 6495116 (2002-12-01), Herman
patent: 20010019238 (2001-09-01), Dai et al.
patent: 20030090190 (2003-05-01), Takai et al.
M. E. Read, et al., “Carbon Nanotube-Based Cathodes for Microwave Tubes”, IEEE Proceedings of the 2001 Particle Accelerator Conference, Chicago, Illinois, Jun. 18-22, 2001, pp. 1026-1028.

Affiliated with

Also associated with

Rating

Carbon nanotube electron ionization sources does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3387246