Two-color spatial and temporal temperature measurements using a streaked soft x-ray imager.
Two-color spatial and temporal temperature measurements using a streaked soft x-ray imager.
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DOI：
10.1063/1.4960160
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发表时间：
2016-11
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通讯作者：
A. Moore;J. Benstead;M. Ahmed;J. Morton;T. Guymer;R. Soufli;T. Pardini;R. Hibbard;C. Bailey;P. Bell;S. Hau-Riege;M. Bedzyk;M. Shoup;S. Regan;T. Agliata;R. Jungquist;D. Schmidt;L. Kot;W. Garbett;M. Rubery;J. Skidmore;E. Gullikson;F. Salmassi
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作者：
A. Moore;J. Benstead;M. Ahmed;J. Morton;T. Guymer;R. Soufli;T. Pardini;R. Hibbard;C. Bailey;P. Bell;S. Hau-Riege;M. Bedzyk;M. Shoup;S. Regan;T. Agliata;R. Jungquist;D. Schmidt;L. Kot;W. Garbett;M. Rubery;J. Skidmore;E. Gullikson;F. Salmassi
双通道条纹软X射线成像仪已被设计并用于国家点火装置的高能量密度物理实验。该条纹成像仪使用两个狭缝孔径和镍镜的单个浅角反射创建同一 X 射线源的两个图像。薄滤光片用于创建 510 eV 和 360 eV 的窄带通图像。当测量普朗克光谱时，如果两个图像的光谱灵敏度是众所周知的，则可以将两个图像的亮度比转换为色温。为了减少不确定性并消除条纹相机光电阴极中该光子能量范围的光谱特征，在 50 nm Al 条纹相机光电阴极上采用了薄的 100 nm CsI。如果光谱形状是众所周知的，那么光谱灵敏度的不确定性会将温度测量的精度限制在 100 eV 时的大约 4.5%。
A dual-channel streaked soft x-ray imager has been designed and used on high energy-density physics experiments at the National Ignition Facility. This streaked imager creates two images of the same x-ray source using two slit apertures and a single shallow angle reflection from a nickel mirror. Thin filters are used to create narrow band pass images at 510 eV and 360 eV. When measuring a Planckian spectrum, the brightness ratio of the two images can be translated into a color-temperature, provided that the spectral sensitivity of the two images is well known. To reduce uncertainty and remove spectral features in the streak camera photocathode from this photon energy range, a thin 100 nm CsI on 50 nm Al streak camera photocathode was implemented. Provided that the spectral shape is well-known, then uncertainties on the spectral sensitivity limits the accuracy of the temperature measurement to approximately 4.5% at 100 eV.