超高速碰撞LY12铝靶产生闪光的辐射演化特征

为研究超高速碰撞产生闪光的辐射演化特征，利用建立的瞬态光纤高温计测量系统结合二级轻气炮加载系统，进行了4种实验条件下的超高速碰撞实验。每组实验使用一组光纤探头，基于实验所获原始数据结合标定，通过Matlab编程处理得到了给定实验条件及光纤探头安装方案条件下的闪光强度演化，利用比率法得到碰撞闪光的辐射温度演化特征。实验结果表明，在488~667 nm波长范围内超高速碰撞LY12铝靶产生的闪光强度与辐射温度峰值随碰撞角度（与靶板平面的夹角）的增大而减小。

Evolutionary characteristics of light flash radiation produced by hypervelocity impact on LY12 aluminum targets

Hypervelocity impact experiments were conducted under four experimental conditions to investigate evolutionary characteristics of light flash radiation by using optical pyrometer measurement system established and two-stage light-gas gun loading system. One optical fiber probe was used in every experiment. Evolution of light flash intensity was obtained based on original data and calibration by Matlab programmable treatments under the given experimental condition and the optical-fiber probe scheme. Evolutionary characteristics of radiation temperature were acquired by using ratio methods. Experimental results show that impact light flash intensity and radiation temperature peak value decrease with impact angles increasing in the range of 488 to 667 nm during hypervelocity impact on LY12 Aluminum targets.