【摘要】 介绍了用于 X 光激光研究的软 X 光平焦场光栅光谱仪的原理、结构及实验应用结果。此类谱仪有两种:一种是采用名义刻线为 1200 l/mm 的变间距光栅,摄谱范围为 5～50 nm;另一种采用 2400 l/mm 的变间距光栅,摄谱范围达 1～10 nm。着重对前一种谱仪的实验应用作了介绍。得到了用软 X 光底片记录时,谱分辨率为 0.01 nm;与软 X 光扫描相机配合,作时间分辨记录时,谱分辨为 0.05 nm,时间分辨本领为 30 ps。最后还对该谱仪利用凹柱镜及凹球镜的消象散结构作了介绍,也给出了放大率为 5 倍和空间分辨本领达到 25 μm的实验结果。更多还原

【Abstract】 The principle, structure, and application results of a flat field grating spectrograph for X-ray laser research is presented. There are two kinds of the spectrograph. One uses a varied space grating with nominal line spacing 1200 l/mm, the spectral detection range is 5～50 nm, and another uses a 2400 l/mm varied line space grating, detection range is 1～10 nm. The experimental results of the former is introduced only. Both experimental results of this instrument using the soft X-ray film and a streak camera as the detecting elements are given. The spectral resolutions are 0.01 nm and 0.05 nm, respectively. The temporal resolution is 30 ps. Finally, the stigmatic structure of the spectrograph is introduced, which uses cylindrical mirror and spherical mirror as a focusing system. The magnification is 5, spatial resolution is 25 μm. The experimental results are given as well.更多还原