Positive and negative ion recording system for mass spectrometer

Details Positive and negative ion recording system for mass spectrometer Positive and negative ion recording system for mass spectrometer

1977-05-09

1979-01-23

Anderson, Bruce C.

Radiant energy

Ionic separation or analysis

Cyclically varying ion selecting field means

250285, 250282, B01D 5944, H01J 3940

Patent

active

041362802

ABSTRACT:
A method and an apparatus are disclosed for adapting a conventional quadrupole mass spectrometer to substantially simultaneously produce and record both positive and negative ions. The apparatus includes a control circuit for rapidly switching the repeller, source and lens electrodes of a quadrupole mass spectrometer between positive and negative potentials. This switching of the potentials, along with the selection of appropriately favorable ionization conditions, permits the generation of suitable streams of positive and negative ions. A dual electron multiplier detector is used for separately sensing the positive and negative ions transmitted through the quadrupole mass spectrometer. The disclosed method and apparatus are particularly suitable for obtaining accurate mass measurements using a quadrupole mass spectrometer.

REFERENCES:
patent: 3280326 (1966-10-01), Gunther
patent: 3555272 (1971-01-01), Munson et al.
patent: 4066894 (1978-01-01), Hunt et al.

Affiliated with

Also associated with

Rating

Positive and negative ion recording system for mass spectrometer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Positive and negative ion recording system for mass spectrometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Positive and negative ion recording system for mass spectrometer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2274248