Particle source

Details Particle source Particle source

1992-02-19

1993-03-23

Berman, Jack I.

Radiant energy

Ion generation

Field ionization type

250424, 250286, H01J 340

Patent

active

051967081

ABSTRACT:
An ion source for producing a series of bursts of ions of predetermined energy suitable for use in a time-of-flight mass spectrometer is described. The source includes an ion gun 1 whose accelerating voltage is periodically varied such that the energy of the ions produced by the gun 1 is ramped from a first energy to a second energy. A chopping means is provided to chop the beam of ions produced by the gun 1 at, times corresponding to periods during which the energy of the particles is being ramped.

REFERENCES:
patent: 3096437 (1963-07-01), Muray
patent: 4904872 (1990-02-01), Grix et al.

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