摘要
基于塞曼效应实验装置,观察了Hg谱线的塞曼分裂,研究了不同幅值的电流与磁场下测得的电子荷质比及其测量精度。实验采用特斯拉计对不同电流幅值下电磁线圈产生的磁场强度进行多次测量,并利用多项式拟合方法构建了精确的电流-磁场拟合曲线。此外,采用等腰三角形内切法测量CMOS相机采集的干涉圆环直径,以提高测量精度。实验结果表明,通过优化磁场强度的测量精度和干涉圆环直径的测量精度,可显著提升电子荷质比的测量精度,其中在电流为4.5 A时,测量误差最小,约为0.21%。本研究为塞曼效应实验教学提供了更精确的测量方法和优化的实验方案。
Based on the Zeeman effect experimental setup,the Zeeman splitting of Hg spectral lines was observed,and the electron charge-to-mass ratio and its measurement accuracy under different current amplitudes and magnetic fields were studied.The experiment employed a Teslameter to measure the magnetic field strength generated by the electromagnetic coil at different current amplitudes multiple times,and constructed an accurate current-magnetic field fitting curve using polynomial fitting method.In addition,the isosceles triangle incision method was used to measure the diameter of the interference ring captured by the CMOS camera to improve measurement accuracy.The experimental results showed that by optimizing the measurement accuracy of magnetic field strength and the mea-surement accuracy of interference ring diameter,the measurement accuracy of electron charge-to-mass ratio could be significantly improved.When the current was 4.5 A,the measurement error was the smallest,which is about 0.21%.This study provides a more accurate measurement method and optimized experimental scheme for Zeeman effect experiment teaching.
作者
葛强
蒋翌超
汤楠
曹京
张刚
王冠凌
章宁娟
GE Qiang;JIANG Yichao;TANG Nan;CAO Jing;ZHANG Gang;WANG Guanling;ZHANG Ningjuan(School of Mathematics-Physics and Finance,Anhui Polytechnic University,Wuhu 241000,China;School of Electrical Engineering,Anhui Polytechnic University,Wuhu 241000,China;Teaching Affairs Office,Anhui Polytechnic University,Wuhu 241000,China)
出处
《宿州学院学报》
2025年第9期1-5,共5页
Journal of Suzhou University
基金
安徽省高等学校质量工程项目(2023sysx011,2024dzxkc053)
教育部产学合作协同育人项目(231100532104835)
安徽工程大学本科教学质量提升计划项目(2024yljc04,2024gzgxyth09)
安徽工程大学研究生质量工程项目(2023yzl056,2023yzl055)。
关键词
塞曼效应
电子荷质比
PASCO平台
多项式拟合
等腰三角形内切法
Zeeman Effect
electron charge-to-mass ratio
PASCO Platform
fitting by polynomial
isosceles triangle incision method
