标题： Tunka 超级电导阵列数据得到的10^15至10^17 eV能区的宇宙线能量谱和质量组成 显示英文标题

标题： Cosmic Ray Energy Spectrum and Mass Composition from 10^15 to 10^17 eV by Data of the Tunka EAS Cherenkov Array

摘要： 我们展示了对EAS切伦科夫阵列Tunka-25实验数据的改进分析结果。基于CORSIKA模拟开发了一种新的函数，用于拟合核心距离从0到350米范围内的切伦科夫光横向分布（LDF），并将其应用于Tunka数据的分析。使用了两种估算EAS最大位置的方法：一种基于脉冲FWHM，另一种基于光LDF。我们给出了能量范围为10^15至10^17 eV的初级宇宙线能谱。讨论了利用EAS最大深度确定平均质量组成的方法。 显示英文摘要

摘要： We present results of an improved analysis of the experimental data of the EAS Cherenkov array Tunka-25. A new function to fit the Cherenkov light lateral distribution LDF at core distances from 0 to 350 m has been developed on the base of CORSIKA simulations and applied to the analysis of Tunka data. Two methods to estimate the EAS maximum position have been used. The one is based on the pulse FWHM, the other on the light LDF. We present the primary energy spectrum in the energy range 10^15 - 10^17 eV. The use of the depth of the EAS maximum to determine the mean mass composition is discussed.