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差异演化算法在计算基本电荷中的应用
引用本文:高飞.差异演化算法在计算基本电荷中的应用[J].计算机工程与应用,2006,42(13):216-218.
作者姓名:高飞
作者单位:武汉理工大学数学系,武汉,430070
基金项目:武汉理工大学校科研和教改项目
摘    要:近年来,磁漂浮的方法测量分数电荷的实验的兴起使得Millikan油滴实验又重新站到了实验物理的前列;尽管通过繁琐的实验和运算得到了油滴电量值,但由于实验误差造成油滴电量的非整数性,使得通过寻求油滴电荷量或油滴带电量之差的最大公约数(GCD)确定基本电荷的方法难以实现。论文分析了Millikan油滴实验中几种常用的典型数据处理方法的优缺点,基于把最大公约数转化为线性模型的思想,运用差异演化算法(DE)的并行寻优优势,将DE应用于数据分析,直接寻找基本电荷的大小;数值实验验证了该方法的有效性,表明该方法克服了目前大多数方法不能反映实验真实结果的缺陷。

关 键 词:Millikan油滴实验  差异演化算法  最大公约数
文章编号:1002-8331-(2006)13-0216-03
收稿时间:2005-06
修稿时间:2005-06

Application of Differential Evolution Algorithms in Determining the Charge on an Electron
Gao Fei.Application of Differential Evolution Algorithms in Determining the Charge on an Electron[J].Computer Engineering and Applications,2006,42(13):216-218.
Authors:Gao Fei
Affiliation:School of Science,Wuhan University of Technology,Wuhan 430070
Abstract:Millikan oil drop experiments come to the front of experimental physics again by the developing of the magnetic suspend method in measuring fractional charge recently.Though getting the charge of the oil drop by complex experiments and computation,it is difficult to determine the charge on an electron by finding greatest common divisors(GCD) of the charge of oil drops or difference of the charge of the drop.The advantages and disadvantages of the typical data analysis methods are discussed firstly.Then based on the idea of transforming GCD into a linear model and the parallel superiority of the Differential Evolution Algorithms(DE),we have used DE into data analysis to find the charge on an Electron.Numerical example illustrates that the results is effective and the proposed method overcome the limitation of reflecting the actual experimental results of the known methods.
Keywords:millikan oil drop experiments  differential evolution algorithms  greatest common divisors
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