Quadruple focusing time of flight mass spectrometer

Details Quadruple focusing time of flight mass spectrometer Quadruple focusing time of flight mass spectrometer

1987-03-27

1988-06-28

Church, Craig E.

Radiant energy

Ionic separation or analysis

Ion beam pulsing means with detector synchronizing means

250294, H01J 4940

Patent

active

047541350

ABSTRACT:
A quadruple focusing time of flight mass spectrometer is disclosed comprised of a deflection zone including four separate focusing electrode pairs for each sequentially guiding ions through a deflection arc with limited divergence from a central reference plane. The focusing electrode pairs are arranged so that ions exit from the deflection zone in a direction opposite to that of their direction of entrance.

REFERENCES:
patent: 3863068 (1975-01-01), Poschenrieder
Poschenrieder, "Multipe-Focusing Time of Flight Mass Spectrometers Part I. TOFMS with Equal Momentum Acceleration", International Journal of Mass Spectrometry and Ion Physics, vol. 6, 1971, pp. 413-426.
Poschenrieder, "Multiple-Focusing Time of Flight Mass Spectrometers Part II. TOFMS with Equal Energy Acceleration", International Journal of Mass Spectrometry and Ion Physics, vol. 9, 1972, pp. 357-373.
Sakurai et al., "Ion Optics for Time-of-Flight Mass Spectrometers with Multiple Symmetry", International Journal of Mass Spectrometry and Ion Processes, vol. 63, 1985, pp. 273-287.
Sakurai et al., "A New Time-of-Flight Mass Spectrometer", International Journal of Mass Spectrometry and Ion Processes, vol. 66, 1985, pp. 283-290.
Sakurai et al., "Particle Flight Times in a Toroidal Condenser and an Electric Quadrupole Lens in the Third Order Approximation", International Journal of Mass Spectrometry and Ion Processes, vol. 68, 1986, pp. 127-154.

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