“阳”加速器Z箍缩实验用透射光栅谱仪  

Transmission grating spectrometer for Z-pinch experiment on Yang accelerator

作　　者：李晶[1,2] 黄显宾[2] 谢卫平[2] 杨礼兵[2] 朱效立[3] 段书超[2] 蒲以康[1] 

机构地区：[1]清华大学工程物理系,北京100084 [2]中国工程物理研究院流体物理研究所,四川绵阳621900 [3]中国科学院微电子研究所纳米加工与新器件集成技术实验室,北京100029

出　　处：《强激光与粒子束》2010年第3期683-686,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(10635050)

摘　　要：研制的透射光栅谱仪配备了高线密度金透射光栅作为分光元件,使用X光CCD记录时间积分光谱图像。在谱仪结构中引入了两个相互垂直的狭缝,一个用于实现光谱图像的1维空间分辨;另一个与光栅相配合后具有准直入射X光的作用,用来提高谱仪的分辨力。使用该谱仪对"阳"加速器Z箍缩实验的X光辐射进行了测量。当使用铝丝阵作为负载时,测得了铝的K壳层辐射和类锂离子的线谱辐射,并且通过将光谱图像与X光针孔相机的测量结果相比较,观察到了"热点"区域放出的较强的K壳层辐射。A transmission grating spectrometer has been fabricated for the study of X-ray radiations from Z-pinch plasma. The spectrometer contains a 3 333 lp/mm gold transmission grating and an X-ray CCD to record time-integral spectral images. Two slits are employed in the spectrometer. One is used for 1 D space resolving and the other , working together with the grating＇s entrance slit, can collimate the incident X-rays and thus improve the spectral resolution of the spectrometer. The spectrometer has been used in Z-pinch experiments performed on Yang accelerator. When using AI wire arrays as Z-pinch loads, the Al K-shell lines and lines from Li-like ions were observed. In addition, by comparing the spectral image with the image obtained from an X- ray pinhole camera, the K-shell radiations emitted from the ＂hot spot＂ region were recorded.

关 键 词：透射光栅谱仪 Z箍缩诊断 铝丝阵负载 K壳层辐射 

分 类 号：O434.13[机械工程—光学工程] O536[理学—光学]