Field Strength Threshold of Common Discharge Gases Breakdown

LI Zhi-gang; CHENG Li; WANG Jia-chun; WANG Qi-chao; SHI Jia-ming

doi:10.3788/fgxb20173801.0103

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Field Strength Threshold of Common Discharge Gases Breakdown

更新时间：2020-08-12

- Field Strength Threshold of Common Discharge Gases Breakdown
- Chinese Journal of Luminescence Vol. 38, Issue 1, Pages: 103-108(2017)
- 作者机构：
  
  脉冲功率激光技术国家重点实验室,安徽合肥,230037
- 作者简介：
- 基金信息：
  
  Supported by National High Technology Research and Development Program(863)(2015AA03
- DOI：10.3788/fgxb20173801.0103
  CLC： O539;O461.2+5
- Received：06 July 2016，
  
  Revised：17 August 2016，
  
  Published：05 January 2017
- 稿件说明：
移动端阅览
李志刚, 程立, 汪家春等. 典型放电气体的击穿场强阈值研究[J]. 发光学报, 2017,38(1): 103-108

LI Zhi-gang, CHENG Li, WANG Jia-chun etc. Field Strength Threshold of Common Discharge Gases Breakdown[J]. Chinese Journal of Luminescence, 2017,38(1): 103-108
李志刚, 程立, 汪家春等. 典型放电气体的击穿场强阈值研究[J]. 发光学报, 2017,38(1): 103-108 DOI： 10.3788/fgxb20173801.0103.

LI Zhi-gang, CHENG Li, WANG Jia-chun etc. Field Strength Threshold of Common Discharge Gases Breakdown[J]. Chinese Journal of Luminescence, 2017,38(1): 103-108 DOI： 10.3788/fgxb20173801.0103.

摘要

为了研究等离子体产生时的气体击穿特性，利用低气压条件下气体击穿场强阈值模型，分析了He、Ne、Ar、Kr、Xe和Hg蒸汽等6种典型放电气体的击穿阈值随入射波频率、电子温度、气体压强以及气体温度的变化规律。结果表明：气体击穿阈值随气体压强的增大而减小，随气体温度、电子温度和入射脉冲频率的增大而增大。气体压强和入射频率对击穿阈值的影响大于气体温度和电子温度，在所考虑的范围内，气体压强对击穿场强的影响约为100 V/m，入射脉冲频率对击穿场强的影响为50~300 V/m，气体温度和电子温度对击穿场强的影响为20~30 V/m。当考虑气体压强、气体温度以及电子温度等因素的影响时，各种气体的击穿场强阈值产生的变化规律相类似；但考虑入射频率的影响时，不同气体的击穿场强阈值差异很大。在所考虑的典型放电气体中，Xe具有最低的击穿场强阈值，He的击穿阈值最大。

Abstract

In order to study the properties of gas breakdown while plasma occurs

the threshold value was calculated according to the model of field strength threshold under the lower atmospheric pressure. Six kinds of common discharge gases including helium

neon

argon

krypton

xenon

and mercury vapor were taken into account. Moreover

the related change rule was analyzed and described with the incident frequency

electron temperature

gas pressure

and gas temperature considered. The results show that the gas breakdown threshold is affected by the four factors mentioned above. On the one hand

it decreases while the gas pressure increases. On the other hand

it increases with the gas temperature

electron temperature

and incident frequency increasing. The effects of the gas pressure and incident frequency play more of a role than that of gas temperature and electron temperature. The value of breakdown threshold changes about 100 V/m due to the influence of gas pressure. Similarly

it changes 50 V/m to 300 V/m

and 20 V/m to 30 V/m with the effects of incident frequency and gas or electron temperature thought about. What's more

the change rule is found to be similar for all kinds of charge gases when the effects of gas pressure

gas temperature

and electron temperature are thought over. But it varies while the incident frequency is considered. In addition

xenon has the smallest threshold value while helium having the largest one among the gases studied.

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