Study On Spectral Radiation Produced By Hypervelocity Impact On Plate

In order to study the characteristics of the spectral radiance of the hypervelocity impact on aluminum target,Cu target and dolomite target,data acquisition system such as two-stage light gas projectile loading system with data acquisition system and spectrometer pyrometer measurement system experimental platform,and carrying out the hypervelocity impact experiment on the 2A12 aluminum target,Cu target and dolomite target.Based on the element theory of spectroscopy and the theory of the atomic energy level transition rule,getting the evolution characteristics of spectral radiation of different target plates under different experimental conditions.1)Experimental results on the flash radiation characteristics of hypervelocity impact 2A12 aluminum target plate,copper target plate and dolomite target plate are analyzed:A)For the same target,The impact velocity is not affected on the duration of flash intensity and temperature.With the increase in speed,flash radiation intensity and temperature are all increased;With different target plate,the evolution duration of flash radiation intensity about aluminum plate,copper target plate and dolomite target were40?s,50?s and 100?s.B)For the similar impact velocity,the radiation temperature of the dolomite target plate is higher than that of the aluminum target plate,the radiation temperature of the aluminum target plate is higher than that of the copper target plate.2)The wavelength and intensity in the collision material spectrum can accurately reflect the different ingredients of collision material and their proportion.By collecting the collision material spectrum,the material element information in the hypervelocity impact process can be revealed on mesoscopic and micro levels.2A12 aluminum target plate,copper target plate and the ultra high speed impact experiment of the dolomite target plate,the element composition of the collision spectra and the material composition of the projectile target are basically the same.3)On account of the atomic energy level transition rules,through studying the characteristics of the spectral radiance on the aluminum target,Cu target and dolomite target,the results are as follows:A)At the same speed,through the collision from different angles,when the 2A12 spherical aluminum projectiles hits on the 2A12 aluminum target plate,the impact of spectral intensity at the angle of 30 degree is greater than that at the angle of 45 degree;Under the same collision,the spectral radiation intensity of the aluminum element is greater than that of the magnesium element.With the increase of the impact velocity of the aluminum element and magnesium element,the spectral radiation intensity are all increasing.B)When hitting on the Cu target plate,the impact of the projectile can eliminate the interference of the projectile itself.The type of the projectiles will impact the peak value of the spectral radiant intensity,the same projectiles impact on the Cu target,the spectral radiant intensity's peak value of copper remains the same.C)When hitting on the dolomite target plate,with other experimental conditions unchanged,the impact velocity is changed,and the spectral radiant intensity's peak values keep constant.With the increase of the impact velocity,the intensity of the radiation intensity of the platinum element is almost unchanged,and the intensity of the radiation intensity of the spectral line of the silicon is greatly improved.The main elements of the target spectral radiation are the aluminum element and the magnesium element,and aluminum element's radiation intensity is greater than that of magnesium element.The spectral intensity of magnesium is not sensitive to the impact velocity,and the curve is flat,and the intensity of the spectrum is sensitive to the impact velocity,which is a positive correlation.