Over the past few years, work has been conducted at AWE to accurately characterize x-ray diffraction crystals to allow for absolute measurements of x-ray emission for our Orion opacity campaigns. Diffraction crystals are used in spectrometers on Orion to record the dispersed spectral features emitted by the laser produced plasma to obtain a measurement of the plasma conditions. Previously, based on a Manson x-ray source, our calibration system struggled to attain a high signal at the low energies required in calibration for the use of aluminum as a tracer for higher atomic number experiments. Here, we present data from the newly commissioned CTX400 x-ray source, a twin anode water cooled system, showing it to be a bright source even for ∼1 keV energies. Rocking curve measurements for three of the most commonly used crystals, namely, pentaerythritol, cesium acid phthalate, and germanium, are presented for both convex and flat forms.

中文翻译：

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一种新的双晶校准系统，用于低至 1 keV 能量的绝对 X 射线发射测量

在过去几年中，AWE 开展了准确表征 X 射线衍射晶体的工作，以便对我们的猎户座不透明度活动的 X 射线发射进行绝对测量。Orion 上的光谱仪使用衍射晶体来记录激光产生的等离子体发射的分散光谱特征，以获得等离子体条件的测量值。以前，基于曼森 X 射线源，我们的校准系统努力在校准所需的低能量下获得高信号，以使用铝作为更高原子序数实验的示踪剂。在这里，我们展示了来自新投入使用的 CTX400 X 射线源（一种双阳极水冷系统）的数据，表明即使对于 1 keV 的能量，它也是一个明亮的源。三种最常用晶体的摇摆曲线测量，即，