Method and device for the mass spectrometric detection of...

Details Method and device for the mass spectrometric detection of... Method and device for the mass spectrometric detection of...

2011-03-22

2011-03-22

Berman, Jack I (Department: 2881)

Radiant energy

Ionic separation or analysis

With sample supply means

C250S282000, C250S42300F

Reexamination Certificate

active

07910883

ABSTRACT:
A method for mass-spectrometric detection of compounds in a gas flow includes: alternatingly forming first and a second beams by switching between electron pulses/pulse trains and photon pulses/pulse trains, the photon pulses/pulse trains being generated by an excimer lamp, and the switching between the electron pulses/pulse trains and the photon pulses/pulse trains occurring at a switching frequency above 50 Hz; disposing the gas flow in an ionization region crossed by the first and second beams so as to ionize volume units in the gas flow so as to form ions of the compounds; deflecting the ions in an effective region of an electric field to a mass-spectrometric device; and sensing the ions with a mass-spectrometric process of the mass-spectrometric device.

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patent: 2002/0104962 (2002-08-01), Danno et al.
patent: 10014847 (2001-10-01), None
patent: 10044655 (2002-04-01), None

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