| 平面镜反射率的标定及修正 |
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| 引用本文： | 孙可煦,张景和,崔明启,杨国洪,江少恩,易清,张文海,崔延莉.平面镜反射率的标定及修正[J].强激光与粒子束,2007,19(8):1308-1312. |
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| 作者姓名： | 孙可煦 张景和 崔明启 杨国洪 江少恩 易清 张文海 崔延莉 |
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| 作者单位： | 中国工程物理研究院,激光聚变研究中心,高温高密度等离子体物理国家重点实验室,四川,绵阳,621900;哈尔滨工业大学,精密工程研究所,哈尔滨,150001;中国科学院,高能物理研究所,同步辐射实验室,北京,100039 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 研究了用同步辐射源标定软X光掠入射平面镜的反射率。实验采用北京同步辐射装置(BSRF)-3W1B束线及反射率计靶室，在50~1 500 eV能区，做了C，Si，Ni和Au材料平面镜在1°~7°掠射角下的反射率标定曲线。由于3W1B束线的单色器采用变间距光栅作色散元件，光栅分光必然存在高次谐波，高次谐波严重影响光源的单色性，从而给平面镜的反射率标定值带来误差。前置滤片虽然能有效抵制高次谐波，但不能完全消除高次谐波。为此，利用透射光栅对光源做了单色性研究，给出高次谐波在不同能区所占光源强度的比例，从而对平面镜反射率标定值做出修正。
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| 关 键 词： | 同步辐射 软X光平面镜 反射率标定 数据处理 修正 |
| 文章编号： | 1001-4322（2007）08-1308-05 |
| 收稿时间： | 2006/9/8 |
| 修稿时间： | 2006-09-08 |
Calibration and correction of reflectivity of soft X-ray planar mirror |
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| SUN Ke-xu,ZHANG Jing-he,CUI Ming-qi,YANG Guo-hong,JIANG Shao-en,YI Rong-qing,ZHANG Wen-hai,CUI Yan-li.Calibration and correction of reflectivity of soft X-ray planar mirror[J].High Power Laser and Particle Beams,2007,19(8):1308-1312. |
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| Authors: | SUN Ke-xu ZHANG Jing-he CUI Ming-qi YANG Guo-hong JIANG Shao-en YI Rong-qing ZHANG Wen-hai CUI Yan-li |
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| Institution: | 1. National Key Laboratery of Laser Fusion of Laser Fusion Research Center, CAEP, Mianyang 621900, China;2. Department of Fine Mechanical Engineering, Haerbin Institute of Technology, Haerbin 150001, China;3. Synchrotron Radiation Laboratory of Institute of High Energy Physics, Chinese Academy of Scineces, Beijing 100039, China |
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| Abstract: | The reflectivity calibration and correction of soft X-ray planar mirror is studied. Research is done on the 3W1B beamline of Beijing synchrotron radiation facility for mirrors with several materials, from 50 eV to 1 500 eV, with 40-120 mA beam current and 2 GeV storage ring electron energy. Variable-spacing planar grating on 3W1B generates higher harmonics necessarily, which reduces monochromaticity notably and brings about some errors. Though prefiher is used, limited by the grating dispersion effeciency and X-ray source internsity, there are still some higher harmonics during 300-750 eV. Therefore, the calibrated reflectivity must be corrected. |
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| Keywords: | Synchrotron radiation Soft X-ray Planar mirror Reflectivity calibration Correction |
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