TWO-CHANNEL TIME-OF-FLIGHT MASS-SPECTROMETER WITH UNIDIRECTIONAL CHANNELS Russian patent published in 2018 - IPC H01J49/40 

FIELD: physics.

SUBSTANCE: two-channel time-of-flight mass spectrometer with unidirectional channels includes parallel two-channel accelerators (1), a vacuum chamber (2), an ion source (3) in the form of a laser ion sputtering device, two ion detectors (4, 5), and an ion collimator (6); herewith, when the ion beams produced by the ion source (3) in the form of the laser ion sputtering device enter the two-channel accelerators (1), parts of the ion beams are accelerated in one direction toward the two ion detectors (4, 5) and recorded. The ion beams created by the ion source (3) in the form of the laser ion sputtering device pass through the ion collimator (6) and are separated by a two-channel time-of-flight mass spectrometer to the top and bottom, wherein the upper part and the lower part deviate, respectively, under an oblique angle and are focused on the upper and lower ion detectors (4, 5), and thus the time-of-flight mass spectrum of ions is formed. If one ion detector is replaced by an electron energy analyzer, then simultaneously it is possible to carry out an experiment with a photoelectron energy spectrum to select a specific ion. The present invention can be combined with an electronic energy analyzer in order to quickly perform an experiment with laser irradiation on ions having a plurality of mass peaks, and the electron spectrum of the detected ion can strictly correspond to the flight time for its maximum mass.

EFFECT: increasing the signal-to-noise ratio and energy resolution.

9 cl, 5 dwg