四苯基丁二醇薄膜的极紫外荧光效率和可见光Re-发射光谱
Fluorescence Efficiency and Visible Re-emission Spectrum of Tetraphenyl Butadiene Films at Extreme Ultraviolet Wavelengths
摘要：
目前和未来的大量中微子和暗物质探测实验都使用贵元素的闪烁光作为测量能量沉积的机制。来自这些元件的闪烁光在60 - 200 nm的极紫外（EUV）范围内产生。目前，用于观察这些波长的光的最实用的技术是用四苯基丁二醇（TPB）的薄膜包围闪烁体以充当荧光剂。TPB膜吸收EUV光子并重新发射可见光光子，可以用各种商业光电传感器检测。在这里，我们提出了一个测量的再发射光谱的TPB薄膜时，照射128，160，175，和250 nm的光。我们还测量了作为入射波长从120至250 nm的函数的荧光效率。
英文摘要：
A large number of current and future experiments in neutrino and dark matter detection use the scintillation light from noble elements as a mechanism for measuring energy deposition. The scintillation light from these elements is produced in the extreme ultraviolet (EUV) range, from 60 - 200 nm. Currently, the most practical technique for observing light at these wavelengths is to surround the scintillation volume with a thin film of Tetraphenyl Butadiene (TPB) to act as a fluor. The TPB film absorbs EUV photons and reemits visible photons, detectable with a variety of commercial photosensors. Here we present a measurement of the re-emission spectrum of TPB films when illuminated with 128, 160, 175, and 250 nm light. We also measure the fluorescence efficiency as a function of incident wavelength from 120 to 250 nm.
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