宇宙线高能族事例中的共线现象  

Phenomenon of Alignment in Cosmic Ray High Energy Family Events

作　　者：薛良[1] 戴志强[1] 李金玉[1] 张学尧[1] 冯存峰[1] 傅宇[1] 张乃健[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》2000年第11期979-984,共6页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金(19875031);高等学校博士学科点专项科研基金资助

摘　　要：通过对甘巴拉山Ｋ０—Ｋ７乳胶室所观测到的部分族事例与运用ＣＯＳＭＯＳ， ＣＯＲＳＩＫＡ程序产生的模拟族事例进行了可分辨能量中心（ＥＤＣ）的共线性的分 析，结果表明：在实验族事例中，共线事例产生的份额随族的总观测能的增高而上 升；而传统的模拟计算不能解释共线现象这一特征．文中还对族事例中γ线与强 子的判别标准进行了讨论．The alignment of energetically distinguished cores in a part of family events observed with Kanbala K0-K7 emulsion chambers is analyzed, and compared with the simulation results given by COSMOS and CORSIKA code. It is shown that the fraction of events with alignment in the experimental families increases with the visible energy of families but this effect can not be explained by the conventional simulations. The Criteria of identifying γ-rays and hadrons in the family events are also discussed.

关 键 词：乳胶室 γ-强子族 Monte Carlo模拟 共线性 

分 类 号：O572[理学—粒子物理与原子核物理]