皮秒分幅相机在Z箍缩实验光谱测量中的应用

 在Angara-5-1装置进行的中俄联合Z箍缩实验中，通过在皮秒分幅相机针孔上粘贴不同种类和厚度的滤片，并利用皮秒分幅相机的光谱响应特性，对丝阵靶实验中产生的强脉冲软X光进行拍照,获得了各种负载不同能段的X光分幅像。通过对皮秒分幅相机和2.3 mm厚formvar膜滤片的光谱响应特性分析，以及对同一时刻粘贴2.3 mm厚formvar膜滤片和未粘贴2.3 mm厚formvar膜滤片两幅图像径向辐射强度波形的对比，确定出获取的X光辐射图像的能谱范围:不加formvar膜滤片的X光辐射图像光子能量大于70 eV，加formvar膜滤片的X光辐射图像光子能量大于150 eV，同时还确定出图像各部分的光子能量分布。

Exploratory research of spectral diagnosis on Z-pinch plasmas with picosecond-frame camera

In the Sino-Russian joint Z-pinch experiments on Angara-5-1 facility,the framing camera with an exposure time of several 10 picosecond was employed. By setting different kinds of filters of various thickness values before the pinholes of camera and using the spectral sensitivity of the camera,multi-frame X-ray images of wire arrays Z-pinch implosions in different energy ranges were obtained. By analysing the relationship between the intensity profiles of corresponding frames and the spectral sensitivity of the camera,it is allowed to estimate X-ray photon energy range in local areas of images. And it is determined that the spectral sensitity of the picosencond-frame camera belongs to a range from 70 eV(without 2.3 μm formvar filter) and from 150 eV (with 2.3 μm formvar filter).