强激光与粒子束2024，Vol.36Issue(12)：97-101,5.DOI:10.11884/HPLPB202436.240070
针-极板内氦气等离子体射流电场监测研究
Study on electric field monitoring of helium plasma jet in needle plate
摘要
Abstract
The study of measurement methods for strong electric fields in small spaces is a challenge.By utilizing the Stark effect of spectral lines and selecting reasonable atoms or ions,measurements can be completed without interference.This article designs a set of atmospheric pressure nanosecond pulse discharge experimental device,which generates a strong electric field through needle electrode discharge,and tests the splitting of He 447.1nm spectral lines under strong electric fields generated at different discharge voltages.When the spectral line broadening is difficult to obtain directly by observing the spectral line,by using the non-linear least squares,the allowable component,the prohibited component and the field independent component of the spectral line are analyzed and the corresponding wavelength offset is calculated to obtain the electric field size.According to Mason's formula,based on energy equivalence,the experimental results meet theoretical expectations,and this method can be used to measure strong electric fields in small spaces.Analysis indicates that the discrepancy between theoretical and experimental results may be attributed to the shielding effect caused by the plasma produced when helium gas undergoes breakdown.关键词
小空间/强电场/氦原子/Stark效应/最小二乘法Key words
small space/strong electric field/helium atom/Stark effect/least square method分类
数理科学引用本文复制引用
刘星辰,闫二艳,黄诺慈,杨浩,石小燕,郑强林,鲍向阳,向飞..针-极板内氦气等离子体射流电场监测研究[J].强激光与粒子束,2024,36(12):97-101,5.基金项目
国家自然科学基金项目(12175216) （12175216）
