Mass spectrometers

Details Mass spectrometers Mass spectrometers

1976-12-20

1979-01-09

Dixon, Harold A.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

250281, B01D 5944

Patent

active

041340132

ABSTRACT:
In the magnetic analyzer of a mass spectrometer in which a beam of ions travels from an entry slit to a collector slit, the field strength of the electromagnet can be increased by reducing the flux gap. In order however to avoid impingement of ions against the wall portions of the spectrometer tube in the reduced flux gap without reducing the width of the beam, collimating means are provided at opposite ends of the wall portions in the gap, the opposite walls of the collimating means extending from the tube wall portions up to the beam to intercept ions which otherwise would enter the collector slit directly or after reflection from the wall portions.

REFERENCES:
patent: 3117224 (1964-01-01), Francis et al.
patent: 3745343 (1973-07-01), Halliday et al.
patent: 3814936 (1974-06-01), Green

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