Abstract
In order to study the critical collision speed of light flash generated by strong shock natural dolomite plate, we use optical fiber transient pyrometer combined with the two-stage light gas gun loading system, the strong shock experiments were performed under four kinds of experimental conditions. Each experiment used 1 set of optical fiber probe, and optical fiber probe is installed directly at the collision point. The relationships between light flash intensity and time are obtained through the experimental original data and calibration. The experimental results show that the light flash intensity gradually weaken with collision speed decreasing under the given experimental and optical fiber probe arranged at the incident angle of 45° and the wavelength range of 550–700 nm. Finally, the critical impact velocity of light flash produced by strong shock dolomite plate is between 1.6 and 1.7 km/s.
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