Radiant energy – Ionic separation or analysis – Cyclically varying ion selecting field means
Patent
1996-06-28
1999-01-12
Anderson, Bruce
Radiant energy
Ionic separation or analysis
Cyclically varying ion selecting field means
250288, 250289, G01D 5944, H01J40900
Patent
active
058594337
ABSTRACT:
The invention relates to an RF quadrupole ion trap mass spectrometer with ionization of the substance molecules outside the vacuum system.
The invention consists of using only a single high-vacuum pump for generating the vacuum without any differential pump stages and generating the necessary pressure stages for operating the mass spectrometer by means of a sequence of openings with adjusted conductances. The necessarily very small inlet opening to the vacuum system is only able to transport very small quantities of ions of the analyzed substances in the gas stream. However, these quantities are adequate for operating the mass spectrometer because the ion trap used as mass spectrometer is capable of collecting and storing ions over relatively long periods of time.
REFERENCES:
patent: 4144451 (1979-03-01), Kambara
patent: 4542293 (1985-09-01), Fenn et al.
patent: 4740696 (1988-04-01), Osawa et al.
patent: 4882484 (1989-11-01), Franzen et al.
patent: 5248875 (1993-09-01), Douglas et al.
patent: 5268572 (1993-12-01), Mordehai et al.
patent: 5298743 (1994-03-01), Kato
patent: 5313061 (1994-05-01), Drew et al.
patent: 5352892 (1994-10-01), Mordehai et al.
patent: 5481107 (1996-01-01), Takada et al.
patent: 5543619 (1996-08-01), Mullock
patent: 5672868 (1997-09-01), Mordehai et al.
John N. Louris, et al. Injection of Ions Inot a Quadrupole Ion Trap Mass Spectrometer, International Journal of Mass Spectrometry and Ions Processes, vol. 88, pp. 97-111.
Anderson Bruce
Bruker-Franzen Analytik GmbH
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