- 必威体育下载

姓名
邮箱
手机号码
标题
留言内容
验证码

Abstract

The coaxial gun discharge can produce plasma jet with high velocity, high density and high energy density, and has extensive applications, such as in plasma space propulsion, simulation of the interaction between edge local mode and wall materials in ITER, fuel injection in magnetic confinement fusion devices, and laboratory astrophysics. In the pre-filled discharge mode or snowplow mode, the plasma current sheet is formed near the insulating layer surface and moves toward the end of the coaxial gun under Lorentz force. Plasma velocity, density and purity characteristics are very important research contents for the actual applications of coaxial gun. Emission spectrometry as a non-interference method can be used to diagnose a variety of plasma physical properties. In this experiment, the effects of different discharge currents and gas pressures on the plasma dynamics, electron density and impurity emission spectra of coaxial gun discharge plasma are studied through the measurement of plasma photocurrent, emission spectra and the shooting of discharge images. The experimental results show that the acceleration time of the plasma in the gun decreases with current increasing in a range of 30–70 kA when the gas pressure is 10 Pa, the spectral intensity of anode and cathode impurities in plasma increase with current amplitude increasing. When the discharge current is 40 kA and the gas pressure is in a range of 10–70 Pa, the acceleration time of plasma increases with gas pressure rising, and the spectral intensity of the cathode impurity in the plasma decreases with the pressure increasing, while the spectral intensity of the anode impurity increases gradually, but its growth rate decreases continuously. The analysis indicates that the presence of metallic impurities originating from the electrode material limits the jet velocity of the plasma and is the main cause of the deviation from theoretical value. The plasma pinch effect at the nozzle of coaxial gun and the acceleration time of high-density arc in the gun are important factors affecting anode ablation. The impurity of cathode material is produced by ion bombardment sputtering, which mainly depends on the energy carried by ions. Therefore, a reasonable choice for discharge parameters is the key factor to obtain optimal plasma characteristics during the discharge of the coaxial gun.

Keywords:

Authors and contacts

Corresponding author:Qi Liang-Wen,18742509171@163.com

Funds:Project supported by the Fourth Batch of Tianyou Youth Talent Lift Program of Lanzhou Jiaotong University, China (Grant No. 1520260419).

FullText HTML: translate this paragraph

References

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]

Cited By

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]

[1]	Zhang Jin-Shuo, Sun Hui, Du Zhi-Jie, Zhang Xue-Hang, Xiao Qing-Mei, Fan Jin-Rui, Yan Hui-Jie, Song Jian.Analysis and optimization of acceleration model in coaxial plasma gun in pre-fill mode. Acta Physica Sinica, 2023, 72(15): 155202.doi:10.7498/aps.72.20230463
[2]	Chen Ze-Yu, Peng Yu-Bin, Wang Rui, He Yong-Ning, Cui Wan-Zhao.Reaction dynamic process of low pressure discharge plasma in microwave resonant cavity. Acta Physica Sinica, 2022, 71(24): 240702.doi:10.7498/aps.71.20221385
[3]	Zhao Fan-Tao, Song Jian, Zhang Jin-Shuo, Qi Liang-Wen, Zhao Chong-Xiao, Wang De-Zhen.Effects of magnetized coaxial plasma gun operation on spheromak formation and plasma characteristics. Acta Physica Sinica, 2021, 70(20): 205202.doi:10.7498/aps.70.20210709
[4]	Song Jian, Li Jia-Wen, Bai Xiao-Dong, Zhang Jin-Shuo, Yan Hui-Jie, Xiao Qing-Mei, Wang De-Zhen.Effect of length of outer electrode on plasma characteristics in coaxial gun. Acta Physica Sinica, 2021, 70(10): 105201.doi:10.7498/aps.70.20201724
[5]	Yu Xin, Qi Liang-Wen, Zhao Chong-Xiao, Ren Chun-Sheng.Comparative study of positive and negative pulsed discharge plasma characteristics of coaxial gun. Acta Physica Sinica, 2020, 69(3): 035202.doi:10.7498/aps.69.20191321
[6]	Zhao Xiao-Yun, Zhang Bing-Kai, Wang Chun-Xiao, Tang Yi-Jia.Effects ofq-nonextensive distribution of electrons on secondary electron emission in plasma sheath. Acta Physica Sinica, 2019, 68(18): 185204.doi:10.7498/aps.68.20190225
[7]	Zhao Chong-Xiao, Qi Liang-Wen, Yan Hui-Jie, Wang Ting-Ting, Ren Chun-Sheng.Influence of discharge parameters on pulsed discharge of coaxial gun in deflagration mode. Acta Physica Sinica, 2019, 68(10): 105203.doi:10.7498/aps.68.20190218
[8]	Qi Liang-Wen, Zhao Chong-Xiao, Yan Hui-Jie, Wang Ting-Ting, Ren Chun-Sheng.Motion characteristics of coaxial gun discharge plasma current sheet. Acta Physica Sinica, 2019, 68(3): 035203.doi:10.7498/aps.68.20181832
[9]	Yang Liang, Zhang Jun-Long, Yan Hui-Jie, Hua Yue, Ren Chun-Sheng.Experimental study on coaxial gun pulse discharge plasma density change in transport process. Acta Physica Sinica, 2017, 66(5): 055203.doi:10.7498/aps.66.055203
[10]	Zhang Jun-Long, Yang Liang, Yan Hui-Jie, Hua Yue, Ren Chun-Sheng.Influence of discharge parameters on blow-by in a coaxial plasma gun. Acta Physica Sinica, 2015, 64(7): 075201.doi:10.7498/aps.64.075201
[11]	Liu Yu-Feng, Ding Yan-Jun, Peng Zhi-Min, Huang Yu, Du Yan-Jun.Spectroscopic study on the time evolution behaviors of the laser-induced breakdown air plasma. Acta Physica Sinica, 2014, 63(20): 205205.doi:10.7498/aps.63.205205
[12]	Du Yong-Quan, Liu Wen-Yao, Zhu Ai-Min, Li Xiao-Song, Zhao Tian-Liang, Liu Yong-Xin, Gao Fei, Xu Yong, Wang You-Nian.Phase resolved optical emission spectroscopy of dual frequency capacitively coupled plasma. Acta Physica Sinica, 2013, 62(20): 205208.doi:10.7498/aps.62.205208
[13]	Liu Yue-Hua, Chen Ming, Liu Xiang-Dong, Cui Qing-Qiang, Zhao Ming-Wen.The mechanism of effect of lens-to-sample distance on laser-induced plasma. Acta Physica Sinica, 2013, 62(2): 025203.doi:10.7498/aps.62.025203
[14]	Gao Zhu-Xiu, Feng Chun-Hua, Yang Xuan-Zong, Huang Jian-Guo, Han Jian-Wei.Research on plasma axial velocity generated by small debris accelerator coaxial gun. Acta Physica Sinica, 2012, 61(14): 145201.doi:10.7498/aps.61.145201
[15]	Pu Yu-Dong, Yang Jia-Min, Jin Feng-Tao, Zhang Lu, Ding Yong-Kun.Characteristics of emission spectroscopyof radiatively heated Al plasma. Acta Physica Sinica, 2011, 60(4): 045210.doi:10.7498/aps.60.045210
[16]	Zhu Zhu-Qing, Wang Xiao-Lei.Experimental study on emission spectra of air plasma induced by femtosecond laser pulses. Acta Physica Sinica, 2011, 60(8): 085205.doi:10.7498/aps.60.085205
[17]	Gao Xun, Song Xiao-Wei, Guo Kai-Min, Tao Hai-Yan, Lin Jing-Quan.Optical emission spectra of Si plasma induced by femtosecond laser pulse. Acta Physica Sinica, 2011, 60(2): 025203.doi:10.7498/aps.60.025203
[18]	Yi You-Gen, Tang Jing-Wu, Huang Du-Zhi.Theoretical calculations of X-ray spectra of Au plasma. Acta Physica Sinica, 2010, 59(11): 7769-7774.doi:10.7498/aps.59.7769
[19]	Niu Tian-Ye, Cao Jin-Xiang, Liu Lei, Liu Jin-Ying, Wang Yan, Wang Liang, Lü You, Wang Ge, Zhu Ying.The techniques of single probe and emission spectroscopy diagnostics in low temperature argon plasmas. Acta Physica Sinica, 2007, 56(4): 2330-2336.doi:10.7498/aps.56.2330
[20]	Huang Song, Xin Yu, NingZhao-Yuan.Studies on C22 radical by optical emission spectroscopy in an induc tively-coupled CF44/CH44 plasma. Acta Physica Sinica, 2005, 54(4): 1653-1658.doi:10.7498/aps.54.1653

Catalog

Vol. 73, Issue 18 - 2024-09-20

Metrics

Abstract views:395
PDF Downloads:29
Cited By:0

Search

Article