Radiant energy – Ion generation – Electron bombardment type
Reexamination Certificate
2007-11-06
2007-11-06
Vanore, David A. (Department: 2881)
Radiant energy
Ion generation
Electron bombardment type
C250S42300F
Reexamination Certificate
active
11114481
ABSTRACT:
In a method for inhibiting space charge-related effects in an ion source, an electron beam is directed into a chamber to produce ions from sample material in the chamber. A voltage pulse is applied to the chamber to perturb an electron space charge present in the chamber. The ion source may be an electron impact ionization (EI) apparatus. The ion source may operated in conjunction with a mass spectrometry system.
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patent: 2784317 (1957-03-01), Robinson
patent: 3553452 (1971-01-01), Tiernan et al.
patent: 6294780 (2001-09-01), Wells et al.
patent: 6576897 (2003-06-01), Steiner et al.
Moeller Roy
Muntean Felician
Steiner Urs
Fishman Bella
Gloekler David
Vanore David A.
Varian Inc.
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