自支撑CsI/PC膜及其X射线光电转换性能研究 |
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引用本文: | 黎宇坤,樊龙,陈韬,邓博,李晋,邓克立,胡昕.自支撑CsI/PC膜及其X射线光电转换性能研究[J].强激光与粒子束,2015,27(8):082006. |
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作者姓名: | 黎宇坤 樊龙 陈韬 邓博 李晋 邓克立 胡昕 |
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作者单位: | 1.中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621 900 |
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摘 要: | 为了获得大面积自支撑的高效率X射线光电转换材料,通过化学气相沉积和热蒸发镀膜工艺,制备出了大面积自支撑的CsI/PC膜,其中PC(聚碳酸酯)膜厚度为300nm,CsI膜厚度在100nm到1μm。通过扫描电镜、X射线衍射仪研究了镀膜速度和受潮对样品表面形貌结构的影响。利用MANSON光源的X射线对不同沉积速率和受潮程度的样品的X射线转换效率进行了研究。在北京同步辐射装置标定了样品X射线光电转换效率,其响应灵敏度峰值大于3000μA/W;将样品作为X射线光电阴极应用在X射线条纹相机上,在神光Ⅲ主机平台上获得了清晰的X射线图像。
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关 键 词: | 自支撑薄膜 CsI 光电转换 X射线 谱响应灵敏度 |
收稿时间: | 2015-04-30 |
Self-supported CsI/PC membrane and its photoelectric conversion property |
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Institution: | 1.Research Center of Laser Fusion,CAEP,P.O.Box 919-986,Mianyang 621900,China |
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Abstract: | A self-supported PC membrane was prepared through chemical vapor deposition process, and CsI was evaporated onto PC surface. Then a large-area self-supported CsI/PC membrane was prepared. The thickness of PC membrane was 300 nm, and that of CsI membrane was controlled between 100 nm to 1 m. The effects of deposition speed and deliquescence on morphology and structure were analyzed by SEM and XRD. The photoelectric conversion property was analyzed by Manson X-ray source. The energy spectral response peak value of CsI/PC membrane was above 3000 A/W which was calibrated at Beijing synchrotron radiation facility. The membrane was applied to X-ray streak camera on SG Ⅲ facility and distinct X-ray images were captured. |
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