Method for controlling space charge-driven ion instabilities...

Details Method for controlling space charge-driven ion instabilities... Method for controlling space charge-driven ion instabilities...

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.

REFERENCES:
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.

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