利用宇宙线直接测量结果对初级宇宙线能谱参数的调整

由JACEE?,RUNJOB和SOKOL等宇宙线直接测量结果和刚度截断模型,对于10¹⁴—10¹⁶eV能区的初级宇宙线微分能谱参数进行调整.利用调整后的能谱与选取QGSJET模型的CORSIKA程序进行EAS模拟,同HD,PD谱进行对比研究.采用相同的标准对模拟数据与实验数据进行分析.结果表明,调整后的谱和HD谱的模拟结果与甘巴拉山乳胶室实验结果符合较好,而PD谱的模拟结果与实验结果偏离较大.

Adjustment of Parameters of Primary Cosmic Ray Energy Spectrum with Recent Direct Measurments

With the data of recent measurements of the JACEE, RUNJOB and SOKOL experiments, and under the assumption of rigidity cut off model, a new primary cosmic ray energy spectrum and chemical composition in 10 14 -10 16 eV energy region are derived. EAS simulations using CORSIKA, combining QGSJET model of high energy hadronic interaction, are performed with this spectrum and another two spectra, HD and PD spectrum, respectively. It is shown that the new spectrum and HD can give very good results, compared with the experimental results obtained with thick Pb emulsion chambers (28 c.u.) at Mt. Kanbala (5500m a.s.l., Tibet, China), while PD spectrum can not.