大学物理 ›› 2016, Vol. 35 ›› Issue (7): 56-58.

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μ子的速度测量

刘文斌,李海鹏,李 明,肖 杨,孙保华,张高龙   

  1. 北京航空航天大学物理科学与核能工程学院,北京 100191
  • 收稿日期:2015-06-15 修回日期:2015-12-01 出版日期:2016-07-20 发布日期:2016-07-20
  • 通讯作者: 孙保华,Email:bhsun@buaa.edu

Velocity measurement of muons

LIU Wen-bin,LI Hai-peng,LI Ming,XIAO Yang,SUN Bao-hua,ZHANG Gao-long   

  1. School of Physics Science and Nuclear Energy Engineering,Beihang University,Beijing 100191,China
  • Received:2015-06-15 Revised:2015-12-01 Online:2016-07-20 Published:2016-07-20

摘要: 地球上的生物每时每刻都受到 子照射.本义介绍了一个测量 予平均速度的实验.基于两套 烁体探测器,利用飞行时间方法,测得海平面附近 子的平均速度为29.72(3)cm/ns.本实验具有较强的探索性、创新性和综合性,需要学生掌握高能宇宙射线、辐射探测和测量的基本知识,可以作为近代物理和前沿物理类实验课程的一个重要内容.

关键词: 宇宙射线&mu, 子, 飞行时间方法, 塑料闪烁体探测器

Abstract: Evepy second the living creatures on earth are subject to muon irradiation.Here an experiment in the level of undergraduate student majoring in nuclear physics related science is introduced aiming to measure the mean velocity of cosmic muons.The mean velocity of muons at around the sea level is determined as with the time-of-flight method.This experiment can be used for teaching in labs of nlodern physics,nuclear physics or frontier physics.It requires that the students understand the high energy cosmic ray and the basic method for radiation detection.

Key words: muon, time-of-flight method, plastic scintillator detector