估计大气电磁级联簇射起始点位置的几种模型(Ⅱ)

SOME MODELS.OF ESTIMATING THE STARTING POINT OF ATMOSPHERIC ELECTROMAGNETIC CASCADE SHOWER(Ⅱ)

在利用高山乳胶室对由宇宙线导致的超高能核作用进行的研究中,精确估计大气电磁级联簇射的起始点位置(即族的产生高度)是很困难的。本文介绍了目前估计族的产生高度的几种方法,及其所依据的物理模型。对各种方法的适用范围也作了说明。这是本文的第二部分,介绍横动量分布和簇射发展的有关模型,以及三角法。

In the research of super-high energy nuclear interaction induced by cosmic rays with emulsion chamber at high mountain,it is very difficult to accurately estimate the starting point of atmospheric electromagnetic cascade shower(i.e,the height of producing family).This paper introduces some ways that are used to estimate the height of producing family and their physical models as well as their applicable conditions.This paper only introduces models about transverse momentum distribution and shower expansion as well as trigonometry.