中文摘要：

文章设计了一套简单的测量缪子平均寿命和衰变能谱的装置.用闪烁体探测器测量缪子衰变事件,探测器的输出信号用一个简单低成本的信号判选电路判选出缪子衰变事件,并触发数字示波器记录缪子衰变的信号.一个自行编写的可视化控制软件可以从这些记录的信号中分析出缪子的平均寿命和衰变能谱.本文还提出了一种用能量损失的朗道分布进行系统能量定标的方法.对探测系统进行了蒙特卡洛模拟,很好重现了实验结果.该套系统中所有的硬件和软件都是对学生完全开放的,非常适合用于教学实验.

英文摘要：

We designed a simple setup to measure the muon lifetime and the electron energy spectra of muon decay.A low cost coincidental circuit was designed to select the signals of muon decay events detected by aplastic scintillator detector.It triggered a digital oscilloscope to record the signals of muon decay events for measuring the muon lifetime and electron energy spectrum.A Landau-distribution energy loss method was introduced to conduct the energy calibration of the system.The experimental results were well reproduced by the Monte Carlo simulation.The software and hardware of the system are completely open to students,thus more helpful for instruction and motivation.