摘要
采用国内首次研制出的2000线/mm的自支撑透射光栅配上背照射软X光CCD(charge coupleddevice)组成了高谱分辨透射光栅谱仪。通过实验标定和理论模型计算相结合得到了高线对透射光栅的绝对衍射效率;同时建立了透射光栅谱仪测谱解谱方法,编制了相应的解谱程序。在"神光"激光装置上利用该谱仪通过激光打靶实验获得了金腔靶注入口发射的X光能谱定量实验结果,实验结果表明,该谱仪测谱范围在高能区达到6000eV,谱分辨达到0.1nm,能够清晰地分辨金等离子体M带三峰分布X光谱结构。
High spectral resolution transmission grating spectrometer is established by combining newly manufactured 2 000 l/mm transmission grating with a softXray CCD. Transmission grating efficiencies have been studied experimentally and theoretically in order to obtain quantitative results of measured Xray spectra. Then, a method for unfolding the soft Xray spectrum measured with transmission grating spectrometer is introduced, in which the grating efficiencies, CCD quantum efficiencies and grating higher dispersive order overlapping have been taken into account. The developed quantitative measurement method has been applied to obtain Xray spectrum from laserentered gold cavity on 'ShengguangⅡ' laser facility.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2003年第1期69-72,共4页
High Power Laser and Particle Beams
基金
国家863计划项目资助课题
高温高密度等离子体国家重点实验室基金资助课题
关键词
高谱分辨透射光栅谱仪
软X光能谱
定量测量
等离子体诊断
High spectral resolution transmission grating spectrometer
Soft X-ray spectrum
Quantitative measurement
