利用宇宙线直接测量结果对初级宇宙线能谱参数的调整  

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

作　　者：王永刚[1] 薛良[1] 冯存峰[1] 傅宇[1] 李婕[1] 张学尧[1] 李金玉[1] 张乃健[1] 何瑁[1] 王承瑞[1] 任敬儒[2] 陆穗苓[2] 

机构地区：[1]山东大学物理系,济南250100 [2]中国科学院高能物理研究所,北京100039

出　　处：《高能物理与核物理》2002年第2期108-115,共8页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金 ( 1 9875 0 31 );教育部博士点基金资助~~

摘　　要：由JACEE ,RUNJOB和SOKOL等宇宙线直接测量结果和刚度截断模型 ,对于 1 0 1 4 — 1 0 1 6eV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 .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.

关 键 词：宇宙线能谱 广延大气簇射 乳胶室 MONTE CARLO模拟 初级宇宙线 直接测量 参数调整 

分 类 号：O572.1[理学—粒子物理与原子核物理]