Radiant energy – Ionic separation or analysis
Patent
1991-12-27
1993-04-20
Berman, Jack I.
Radiant energy
Ionic separation or analysis
250282, 250294, 250298, H01J 4920
Patent
active
052045307
ABSTRACT:
A quadrupole mass spectrometer (QMS) system having an ion source, quadrupole mass filter, and ion collector/recorder system. A weak, transverse magnetic field and an electron collector are disposed between the quadrupole and ion collector. When operated in negative ion mode, the ion source produces a beam of primarily negatively-charged particles from a sample, including electrons as well as ions. The beam passes through the quadrupole and enters the magnetic field, where the electrons are deflected away from the beam path to the electron collector. The negative ions pass undeflected to the ion collector where they are detected and recorded as a mass spectrum.
REFERENCES:
patent: 3031596 (1962-04-01), Leboutet et al.
patent: 3128405 (1964-04-01), Lambertson
patent: 3617739 (1971-11-01), Liebl
patent: 3641339 (1972-02-01), McCormick
patent: 3644731 (1972-02-01), Eloy
patent: 3679896 (1972-07-01), Wardly
patent: 3764803 (1973-10-01), Nakajima
patent: 3893845 (1975-07-01), Mahaffey et al.
patent: 3922544 (1975-11-01), Maul et al.
patent: 4022876 (1977-05-01), Anbar
patent: 4146787 (1979-03-01), Fite
patent: 4163151 (1979-07-01), Bayless et al.
patent: 4564758 (1986-01-01), Slodzian et al.
patent: 4686022 (1987-08-01), Rempt
Berman Jack I.
Constant Richard E.
Dixon Harold M.
Moser William R.
Nguyen Kiet T.
LandOfFree
Noise reduction in negative-ion quadrupole mass spectrometry does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Noise reduction in negative-ion quadrupole mass spectrometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noise reduction in negative-ion quadrupole mass spectrometry will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1527684