Higher pressure ion source for two dimensional radio-frequency q

Details Higher pressure ion source for two dimensional radio-frequency q Higher pressure ion source for two dimensional radio-frequency q

1997-05-16

1999-08-24

Anderson, Bruce C.

Radiant energy

Ionic separation or analysis

With sample supply means

250292, H01J 4900, B01D 5944

Patent

active

059427523

ABSTRACT:
The present invention concerns an improved method and apparatus for analyzing and detecting a charge-neutral sample, which method comprises:

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Fountain, S.T. et al.., "Mass-selective Analysis of Ions in Time-of-flight Mass Spectrometry using an Ion-trap Storage Device", Rapid Communications in Mass Spectrometry, vol. 8, 1994, pp. 487-494.
S. C. Davis et al., in 1990 in Rapid Communications in Mass Spectrometry, vol. 4, pp. 186 to 197 disclose computer modelling of fragmentation processes in radio-frequency multiple collision cell. Ions are injected into and through the cell into an MS/MS instrument.
M. Morris, et al., in 1993 in Rapid Communications in Mass Spectrometry, vol. 7, pp. 1136 to 1140 disclose triple quadrupole mass spectrometry of low-energy ion/molecules products from collision with ammonia.
M. Morris, et al., in 1994 in the Journal of the Americn Society of Mass Spectrometry, vol. 5, pp. 1042 to 1063 disclose n RF-only quadrupole collision cell for use in tandem mass spectrometry as a component of a triple quadrupole mass spectrometer.
B. A. Thomson et al., in 1995 in Analytical Chemistry, vol. 67, No. 10, pp. 1696 to 1704 disclose improved collisionally activated dissolution efficiency and mass resolution using a triple quadrupole mass spectrometer.
K. Whelan, et al., in 1995 in Rapid Communications in Mass Spectrometry, vol. 9, pp. 1366 to 1375 disclose ion dissociation reactions included in a high pressure quadrupole collision cell for a triple quadrupole mass spectrometer system.
D. Douglas, et al., in Journal of American Society of Mass Spectrometry, vol. 3, on p. 399, published in 1992.
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