AIRFLY测量空气荧光产额的温湿度依赖性
Temperature and Humidity Dependence of Air Fluorescence Yield measured by AIRFLY
摘要：
超高能宇宙射线的荧光探测需要详细了解氮分子在大范围大气参数下的荧光发射，对应于大气中宇宙射线簇射发展的典型高度。本文研究了MeV电子在空气中激发的荧光光谱的温度和湿度依赖性。本文报道了313.6nm、337.1nm、353.7nm和391.4nm波段的结果。我们发现，温度和湿度的依赖性的猝灭过程中改变了荧光产量的相当大的量（高达20%），其效果必须包括一个精确的估计超高能宇宙射线的能量。
英文摘要：
The fluorescence detection of ultra high energy cosmic rays requires a detailed knowledge of the fluorescence light emission from nitrogen molecules over a wide range of atmospheric parameters, corresponding to altitudes typical of the cosmic ray shower development in the atmosphere. We have studied the temperature and humidity dependence of the fluorescence light spectrum excited by MeV electrons in air. Results for the 313.6 nm, 337.1 nm, 353.7 nm and 391.4 nm bands are reported in this paper. We found that the temperature and humidity dependence of the quenching process changes the fluorescence yield by a sizeable amount (up to 20%) and its effect must be included for a precise estimation of the energy of ultra high energy cosmic rays.
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