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| 极化X光谱诊断铝激光等离子体的电子密度 | |
| 引用本文： | 王洪建,肖沙里,施军. 极化X光谱诊断铝激光等离子体的电子密度[J]. 光子学报, 2014, 40(8): 1196-1200. DOI: 10.3788/gzxb20114008.1196 |
| 作者姓名： | 王洪建 肖沙里 施军 |
| 作者单位： | (1 重庆工商大学 重庆市发展信息管理工程技术研究中心,重庆 400067) (2 重庆大学 光电技术及系统教育部重点实验室,重庆 400030) |
| 基金项目： | 重庆市科委自然科学基金计划（No.2010BB4250）、重庆工商大学博士启动基金(No.2011-56-04)和国家自然科学基金（No.11075226）资助 |
| 摘 要： | 为了准确诊断激光等离子体的电子密度,提出了一种基于极化光谱的类氦共振线与互组合线相对强度比诊断电子密度的方法.该法考虑了激光等离子体发射的X射线存在极化的特性,用极化光谱理论对测量的类氦共振线和互组合线光谱相对强度比进行精密校正,再推导等离子体的电子密度.在2×10 J激光装置上进行了实验,使用极化PET（002）晶体谱仪测量了Al类氦离子光谱,利用光谱的极化特性推出Al等离子体的电子密度约为1.5×1020 cm－3.结果表明极化X光谱推导等离子体电子密度方法适合激光高温高密等离子体诊断. |
| 关 键 词： | 电子密度 极化晶体光谱仪 X射线光谱 激光等离子体诊断 |
| 收稿时间： | 2011-03-09 |
Diagnosis of Electron Density by Polarized X-ray Lines for Al Laser-produced Plasmas |
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| WANG Hong-jian,XIAO Sha-li,SHI Jun. Diagnosis of Electron Density by Polarized X-ray Lines for Al Laser-produced Plasmas[J]. Acta Photonica Sinica, 2014, 40(8): 1196-1200. DOI: 10.3788/gzxb20114008.1196 | |
| Authors: | WANG Hong-jian XIAO Sha-li SHI Jun |
| Affiliation: | (1 Chongqing Engineering Technology Research Center for Information Management in Development, Chongqing Technology and Business University,Chongqing 400067,China) (2 Key Laboratory of Opto-electronic Technology and System,Ministry of Education,Chongqing University, Chongqing 400030,China) |
| Abstract: | In order to accurately diagnose the electron density of laser-produced plasma,the method of relative intensity ratio of helium-like resonance to combination lines was proposed based on the polarization spectrum.It took into account polarization characteristics of the X-ray in laser-produced plasma,modified the real intensity ratios of the resonance to intercombination lines of He-like ions,then derivated the density of plasma.The experiment was carried out at the 2×10 J laser facility at Laser Fusion Research Center of,China Academy of Engineering Physics (CAEP).X-ray spectra emitted from the aluminum plasmas were recorded by polarized PET(002) crystal spectrometer.By correcting two Al helium-like spectra,it was calculated that the electron density was about 1.5×1 020 cm－3.The experimental results showed that the arithmetic was adapted to diagnose laser-produced high temperature high-density plasmas. |
| Keywords: | Electron density Polarizted crystal spectrometer X-ray diagnosis Laser-produced plasma |
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