宇宙线高能族事例产生特征的模拟与实验研究

利用在EAS实验的模拟计算中被广泛采用的CORSIKA程序,基于强相互作用模型QGSJET和DPMJET,对甘巴拉山乳胶室实验高能族事例的产生特征进行了Monte Carlo模拟.给出了不同能区原初宇宙线各种成分产生族事例的效率及其与原初能量的关系.将模拟计算得到的族事例的平均横向扩展、族中簇射成员数、族的总观测能等的分布及其平均值,与相应的实验结果进行了系统的比较,结果基本相符.此外,模拟族事例也存在与实验相类似的能量集中趋势

Study on the Production Characteristics of Cosmic Ray High Energy Family Events with Simulation and Experiment

A Monte Carlo simulation on production characteristics of high energy family events observed with Mt. Kanbala emulsion chambers is made based on hadronic interaction models QGSJET and DPMJET with program CORSIKA which is commonly used in the simulations of EAS experiments. The production efficiency of family events for different primary particles and its relationship with primary energies are given. The distributions of lateral spreads, numbers of showers, total visible energies of the family events and their corresponding average values got from simulations are systematically compared with those of the experiment. It shows that their results are consistent basically. Additionally, family events from both simulations and experiment have the similar tendency of energy concentration.