CARBON NANOTUBE ELECTRON IONIZATION SOURCES

WIPO Patent Application WO2005048290

A3

An ion source for use in a mass spectrometer includes an electron emitter assembly (30) 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 (34) having an electron-beam inlet (38) to allow the electron beams to enter the ionization chamber, a sample inlet for sample introduction, and an ion-beam outlet (29) to provide an exit for ionized sample molecules; an electron lens (31) disposed between the electron emitter assembly and the ionization chamber to focus the electron beams; and at least one electrode (37) disposed proximate the ion-beam outlet to focus the ionized sample molecules exiting the ionization chamber.

JP2007538376	Replaceable anode liner for ion sources
JP4862110	Ion source
JPH077057	[Name of invention] Plasma sputter type negative ion source

TRAYNOR PETER J (US)
WRIGHT ROBERT G (GB)

PCT/US2004/037956

September 15, 2005

November 12, 2004

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THERMO ELECTRON CORP (US)
TRAYNOR PETER J (US)
WRIGHT ROBERT G (GB)

H01J27/20; H01J49/10; H01J49/14; (IPC1-7): H01J49/14; H01J27/20

WO1996042101A1

1996-12-27

US6452167B1	2002-09-17
US6232706B1	2001-05-15
US6290564B1	2001-09-18

HATA K ET AL: "Selective formation of C20 cluster ions by field evaporation from carbon nanotubes", CHEMICAL PHYSICS LETTERS ELSEVIER NETHERLANDS, vol. 308, no. 3-4, 23 July 1999 (1999-07-23), pages 343 - 346, XP002335818, ISSN: 0009-2614

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