Focusing ion lens system for mass spectrometer for separating ch

Details Focusing ion lens system for mass spectrometer for separating ch Focusing ion lens system for mass spectrometer for separating ch

1976-03-04

1978-02-21

Church, Craig E.

Radiant energy

Ionic separation or analysis

250292, H01J 3934

Patent

active

040754790

ABSTRACT:
In a mass spectrometer a focusing ion lens system effectively separates charged from neutral particles by forming a potential well along the axis from the ionizing region to the mass analyzer by the use of a gridded lens system. The grids by the use of a high-low voltage combination form the potential well while at the same time allowing nonselected neutral particles to pass through the grid. Thus, the system is very effective for relatively high pressure ionizing regions where a large amount of neutral particles are generated.

REFERENCES:
patent: 3859226 (1975-01-01), Schillalies
patent: 3939344 (1976-02-01), McKinney

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