摘要
为实现冲击波速度的精确测量,对光学条纹相机进行了标定,得到了处于不同扫速档时狭缝上不同位置在不同时间区域的扫描速度。标定结果表明,在10ns/15mm档和5ns/15mm档时,初始时刻的扫描速度明显慢于结束时刻。而对于相机的2ns/15mm档,初始时刻的扫描速度更快。相机扫描速度在不同时间差别较大,表明随着相机的老化,采用平均扫描速度和扫速非线性进行数据处理已不适用。
In order to accurately measure the velocity of shock waves, an optic streak camera was calibrated. In the different period of time, the sweep speed of the camera was measured at different sweep grade and different position. Results of the calibration experiments obviously show that the initial sweep speed was slower than the terminal sweep speed at 10ns/15mm and 5ns/15mm grade, but the terminal sweep speed was slower at 2ns/15mm grade. The sweep speed of the camera was unequal in the different period of time. It indicated that analyzing data by average sweep speed and sweep nonlinearity was inapplicable because of the camera＇s aging.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2008年第4期841-844,820,共5页
Nuclear Electronics & Detection Technology
基金
国家863计划项目资助课题
关键词
光学条纹相机
标定
扫描速度
扫速非线性
optic streak camera
calibration
sweep speed
sweep nonlinearity
