铁乳胶室中的簇射转换曲线的特征 与γ/强子分辨  

Characteristics of the Transtion Curves of Showers and Discrimination of γ-Rays and Hadrons in Iron Emulsion Chambers

作　　者：季晓斌 傅宇[1] 薛良[1] 张学尧[1] 李婕[1] 李金玉[1] 张乃健[1] 何瑁[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》2001年第10期1012-1016,共5页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金;高等学校博士学科点专项科研基金资助

摘　　要：利用加速器高能物理实验中通用的探测器模拟软件ＧＥＡＮＴ３对于铁乳胶室进行了室内模拟，研究了级联簇射转换曲线及半宽度的性质，讨论了利用半宽度分布将簇射起始深度　　ｔ＜６ｃ．ｕ．的簇射事例中的强子与 γ线区分开来的可能性．给出了在铁乳胶室实验中行之有效的区分γ／强子的联合判选标准．The GEANT3 code, a general software for detector simulations widely used in the experi- ments of particle physics, is introduced to the Monte Carlo simulation of iron emulsion chambers. Some Characteristics of transition curves of cascade shower and their FWHM (Full Width of Half Maximum) are studied. The probability of discriaminating hadrons from gamma rays using the FWHM distributions for the shower events with starting depth t < 6c. u. is discussed and an efficient joint criterion of discriminating hadrons from γ-rays in iron emulsion chambers is obtained.

关 键 词：铁乳胶室 级联簇射转换曲线 半宽度 γ/强子 探测器 宇宙线 超高能核 联合判选标准 

分 类 号：O572.1[理学—粒子物理与原子核物理]