DEVICE FOR INVESTIGATION OF METAL POWDERS COMBUSTION PROCESS OR THEIR MIXTURES Russian patent published in 2019 - IPC G02B21/00 

FIELD: physics.

SUBSTANCE: invention relates to quantum electronics, namely to nondestructive inspection and diagnostics by optical methods, and can be used for investigation of processes of high-temperature burning of powders of metals, and also processes of interaction of laser radiation with substance. Disclosed device for studying the combustion process of powders of metals or mixtures thereof contains a laser brightness amplifier based on an active element on copper bromide vapor, connected to a high-voltage pulse source, on one side of the amplifier along its optical axis there is a first lens and an object of investigation, a digital camera installed coaxially with the laser amplifier and connected to a personal computer. On the optical axis of the initiating laser there is a mechanical gate, a first beam-splitting plate, a first biconvex lens and an object of analysis mounted on a linear translator. First photodiode is installed opposite the first photodetector plate at an angle to the optical axis of the laser equal to the angle of reflection of the first beam splitter. On the other side of the brightness amplifier on its optical axis, a second beam-splitting plate, a neutral filter, a second lens, a band-pass filter and a digital camera are installed in series. Optical axis of the second photodiode has a diffuser, a second biconvex lens, a neutral light filter and a second beam splitter. Input of the digital camera pulses is connected to a pulse former which is connected to the optical converter. Digital camera recording start input is connected to controller, which is connected with mechanical shutter. First and second photodiodes are connected to a digital oscilloscope which is connected to a personal computer. Master oscillator is connected to the optical converter, which is connected to the source of high-voltage pulses.

EFFECT: possibility to simultaneously initiate a combustion process and obtain quantitative information on time characteristics of combustion processes of powders of metals and their mixtures in real time.

1 cl, 2 dwg