宇宙线高能族事例产生特征的模拟与实验研究  

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

作　　者：王孔森[1] 王河[1] 黄性涛[1] 马连良[1] 马丽娜[1] 王永刚[1] 薛良[1] 冯存峰[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》2004年第3期232-238,共7页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金 ( 10 12 0 13 0 794);山东省自然科学基金 (Y2 0 0 2A0 7)资助~~

摘　　要：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MonteCarlo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 。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.

关 键 词：宇宙线 强相互作用模型 广延大气簇射 蒙特卡罗模拟 族事例 乳胶室实验 

分 类 号：O572.1[理学—粒子物理与原子核物理]