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arXiv 0906.5487astro-ph.HE
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依赖于大气条件的大范围空气簇射引起的荧光发射

Fluorescence emission induced by extensive air showers in dependence on atmospheric conditions

Bianca Keilhauer, Michael Unger

摘要:

广泛的空气簇射(EAS)的带电粒子,主要是电子和正电子,在地球大气中引发荧光的发射。这种光提供了对宇宙射线能量的量热测量。为了从EAS的观察到的光轨迹重建初级能量,空气中的荧光产率必须取决于大气条件(如空气温度、压力和湿度)而已知。关于荧光发射的几个实验已经公布了各种数据集,涵盖了荧光产率对大气条件的依赖性的不同部分。使用已发表的测量汇编,荧光产率的计算依赖于海拔高度。将荧光计算应用于模拟的空气簇射和不同的大气廓线,以估计大气条件对重建的簇射参数的影响。

英文摘要:

Charged particles of extensive air showers (EAS), mainly electrons and positrons, initiate the emission of fluorescence light in the Earth's atmosphere. This light provides a calorimetric measurement of the energy of cosmic rays. For reconstructing the primary energy from an observed light track of an EAS, the fluorescence yield in air has to be known in dependence on atmospheric conditions, like air temperature, pressure, and humidity. Several experiments on fluorescence emission have published various sets of data covering different parts of the dependence of the fluorescence yield on atmospheric conditions. Using a compilation of published measurements, a calculation of the fluorescence yield in dependence on altitude is presented. The fluorescence calculation is applied to simulated air showers and different atmospheric profiles to estimate the influence of the atmospheric conditions on the reconstructed shower parameters.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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