High transmission mass spectrometer with improved optical coupli

Details High transmission mass spectrometer with improved optical coupli High transmission mass spectrometer with improved optical coupli

1991-08-19

1993-02-23

Berman, Jack I.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

250281, 250396R, H01J 4932

Patent

active

051893045

ABSTRACT:
The disclosed mass spectrometer has, positioned between an input slit and an output slit, crossed by particles emitted by a sample, an optical coupling system placed between two respectively electrostatic and magnetic sectors. The optical coupling system comprises at least two lenses with slits oriented respectively along a first direction in which the path of the ions is incurvated by the electrostatic and magnetic sectors and along a direction perpendicular to the plane of the path. The position of the two lenses on the optical axis of the spectrometer is determined to obtain a compensation for the chromatic dispersions throughout the axis downline from the spectrometer, a stigmatic image of the input slit in the output plane of the spectrometer and a stigmatic image downline from the spectrometer.

REFERENCES:
patent: 4078176 (1978-03-01), Matsuda
patent: 4329618 (1982-05-01), Chang
patent: 4418280 (1983-11-01), Matsuda
patent: 4553029 (1985-11-01), Matsuda
patent: 4638160 (1987-01-01), Slodzian et al.
patent: 4672204 (1987-06-01), Slodzian et al.
patent: 4694169 (1987-09-01), Uchida
patent: 4766314 (1988-08-01), Jung
Japanese Abstract, vol. 9, No. 298, (E-361) (2021) Nov. 26, 1985 JP-A-60-13883, Fumo Kunihiro, Jul. 23, 1985, "Mass Spectrograph".

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