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arXiv 1004.3971astro-ph.IM
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绝对荧光产率的可用测量的比较

Comparison of available measurements of the absolute fluorescence yield

J. Rosado, F. Blanco, F. Arqueros

摘要:

荧光产率的绝对值的不确定性仍然是使用荧光技术重建超高能空气簇射的初级能量的总误差的主要贡献之一。在过去的几年中,已经发表了大量的荧光产额的实验值,然而,报告的结果经常以不同的单位(光子/MeV或光子/m)和不同的波长间隔给出。在这项工作中,我们提出了一个比较现有的结果归一化到其值的光子/MeV的337 nm波段在800 hPa和293 K。将光子/m转换为光子/MeV需要准确确定实验装置视场中电子沉积的能量。我们通过详细的蒙特卡罗模拟计算了每个实验的能量沉积,可能时包括特定设置的几何细节。我们的预测上的沉积能量,以及一些几何因素,已与作者的相应的实验和可能的修正的荧光产率提出的报告进行了比较。

英文摘要:

The uncertainty in the absolute value of the fluorescence yield is still one of the main contributions to the total error in the reconstruction of the primary energy of ultra-energetic air showers using the fluorescence technique. A significant number of experimental values of the fluorescence yield have been published in the last years, however reported results are given very often in different units (photons/MeV or photons/m) and for different wavelength intervals. In this work we present a comparison of available results normalized to its value in photons/MeV for the 337 nm band at 800 hPa and 293 K. The conversion of photons/m to photons/MeV requires an accurate determination of the energy deposited by the electrons in the field of view of the experimental setup. We have calculated the energy deposition for each experiment by means of a detailed Monte Carlo simulation including when possible the geometrical details of the particular setup. Our predictions on deposited energy, as well as on some geometrical factors, have been compared with those reported by the authors of the corresponding experiments and possible corrections to the fluorescence yields are proposed.

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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