|
|
|
|
|
|
Research on the Electron Temperature in Nanosecond Pulsed Argon Discharges Based on the Continuum Emission |
CHEN Chuan-jie1, 2, FAN Yong-sheng3, FANG Zhong-qing1, 2, WANG Yuan-yuan1, 2, KONG Wei-bin1, 2, ZHOU Feng1, 2*, WANG Ru-gang1, 2 |
1. School of Information Engineering, Yancheng Institute of Technology, Yancheng 224051, China
2. Research Center of Photoelectric and Information Technology, Yancheng Institute of Technology, Yancheng 224051, China
3. School of Automotive Engineering, Yancheng Institute of Technology, Yancheng 224051, China |
|
|
Abstract In this paper, atmospheric pressure nanosecond pulsed discharges in pin-to-pin geometry are very easily reproducible by applying a positive overvoltage, and such discharge system is placed in a sealed chamber filled with high purity argon gas. A continuum radiation model for the atmospheric pressure discharges is proposed to diagnose the electron temperature of the nanosecond pulsed argon discharges. The high voltage and current probes monitor the voltage and current waveforms during the discharge, and the discharge pulse width is about 20 ns. The time-resolved emission spectra of the discharge column at different times (0<t<20 ns) are measured by the combination of optical systems, such as achromatic lens, monochromator and ICCD. The results indicate that the continuum emission intensity of the discharge increases with time during the period of 0<t<10 ns, and then decreases during 10 ns<t<20 ns. However, the intensity of argon lines always increases with time. As the intensity of continuum emission is positively correlated to the electron density, the electron density also increases firstly and then decreases, which has the same tendency as the discharge current. According to the continuum radiation model, the electron temperature during the discharge (0<t<10 ns) is measured to be (1.4±0.2) eV. As the driven voltage drops (10 ns<t<20 ns), the electron temperature decreases gradually to 0.9 eV. Our research suggests that the excited argon atoms are mainly populated by electron impact excitation during 0<t<10 ns, and thus their emission intensities increase with the electron density. Afterwards, due to the decreasing of electron temperature, the rate of Ar+2 ions recombination reaction increases dramatically. The production of excited atoms is governed by the electronion recombination processes, leading to increase their emission intensities further. The virotational spectrum of OH species is detected by adding 0.5% water vapor into the working gas. It is found that the production mechanisms of OH(A) make it deviated from Boltzmann distribution. In this work, a two-rotational temperatures OH(A-X) spectral model is employed to examine the gas temperature. During the discharge pulse, the gas temperature remains invariant around the value of 400 K. Moreover, the addition of water vapor causes the increase of the intensity of the continuum in the short wavelength range. It is analyzed that H2 could be produced by the dissociation of H2O in the discharge and then excited to the excited state H2(a3Σ+g) by means of the energy transfer reaction from argon atoms in a metastable state. Finally, H2(a3Σ+g) decays by spontaneous radiation to the repulsion state H2(b3Σ+u) and emits the short-wavelength continuum emission. The electron temperature (Te>1 eV) is very sensitive to the short wavelength response of the continuum spectrum. So even if the working gas contains a small amount of water vapor, it will greatly influence the electron temperature diagnosed by the continuum radiation.
|
Received: 2020-08-20
Accepted: 2021-01-09
|
|
Corresponding Authors:
ZHOU Feng
E-mail: zfycit@ycit.edu.cn
|
|
[1] SHAO Tao, ZHANG Cheng, WANG Rui-xue, et al(邵 涛,章 程,王瑞雪,等). High Voltage Engineering(高电压技术), 2016, 42(3): 685.
[2] Bruggeman P, Iza F, Brandenburg R. Plasma Sources Science and Technology, 2017, 26(12): 123002.
[3] LI He-ping, YU Da-ren, SUN Wen-ting, et al(李和平,于达仁,孙文廷,等). High Voltage Engineering(高电压技术), 2016, 42(12): 3697.
[4] LI Xue-chen, WU Kai-yue, JIA Peng-ying, et al(李雪辰,吴凯玥,贾鹏英,等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2018, 38(3): 722.
[5] Huang B D, Zhu X M, Takashima K, et al. Journal of Physics D: Applied Physics, 2013, 46(46): 464011.
[6] Burm K T A L. Plasma Sources Science and Technology, 2004, 13(3): 387.
[7] Wang Y, Li C, Shi J, et al. Plasma Science and Technology, 2017, 19(11): 115403.
[8] Roettgen A, Shkurenkov I, Simeni S M, et al, Plasma Sources Science and Technology, 2016, 25(5): 055009.
[9] Chen C J, Simeni Someni M, Li S Z, et al. Plasma Sources Science and Technology, 2020, 29(3): 035020.
[10] Park S, Choe W, Moon S Y, et al. Advances in Physics: X, 2019, 4(1): 1526114.
[11] Kang N, Gaboriau F, Oh S, et al. Plasma Sources Science and Technology, 2011, 20(4): 045015.
[12] Bruggeman P J, Sadeghi N, Schram D C, et al. Plasma Sources Science and Technology, 2014, 23(2): 023001.
[13] Qian M, Liu S, Yang C, et al. Plasma Sources Science and Technology, 2016, 25(5): 055012.
[14] Fantz U, Schalk B, Behringer K. New Journal of Physics, 2000, 2: 7. |
[1] |
YU Hao-zhang, WANG Fei-fan, ZHAO Jian-xun, WANG Sui-kai, HE Shou-jie*, LI Qing. Optical Characteristics of Trichel Pulse Discharge With Needle Plate
Electrode[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(10): 3041-3046. |
[2] |
LIU Hong-wei1, FU Liang2*, CHEN Lin3. Analysis of Heavy Metal Elements in Palm Oil Using MP-AES Based on Extraction Induced by Emulsion Breaking[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(10): 3111-3116. |
[3] |
LIU Pan1, 2, 3, DU Mi-fang1*, LI Bin1, LI Jing-bin1, ZENG Lei1, LIU Guo-yuan1, ZHANG Xin-yao1, 4, ZHA Xiao-qin1, 4. Determination of Trace Tellurium Content in Aluminium Alloy by
Inductively Coupled Plasma-Atomic Emission Spectrometry Method[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(10): 3125-3131. |
[4] |
TIAN Fu-chao1, CHEN Lei2*, PEI Huan2, BAI Jie-qi1, ZENG Wen2. Diagnosis of Emission Spectroscopy of Helium, Methane and Air Plasma Jets at Atmospheric Pressure[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(09): 2694-2698. |
[5] |
ZHANG Zhi-fen1, LIU Zi-min1, QIN Rui1, LI Geng1, WEN Guang-rui1, HE Wei-feng2. Real-Time Detection of Protective Coating Damage During Laser Shock Peening Based on ReliefF Feature Weight Fusion[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(08): 2437-2445. |
[6] |
LI Chang-ming1, CHEN An-min2*, GAO Xun3*, JIN Ming-xing2. Spatially Resolved Laser-Induced Plasma Spectroscopy Under Different Sample Temperatures[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(07): 2032-2036. |
[7] |
LI Zhi-xiong1, 2, LU Qian-shu1, ZHANG Lian-kai1, 2*, ZHANG Song1, YANG Wan-tao1, LI Can-feng1, FENG Jun1, LIU Zhen-chao1. Study on the Determination of Silver, Boron, Molybdenum, Tin in Geochemical Samples by the Method of Solid Sampling Carrier Distillation Atomic Emission Spectrum[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(07): 2132-2138. |
[8] |
SI Yu1, LIU Ji1*, WU Jin-hui2, ZHAO Lei1, YAN Xiao-yan2. Optical Observation Window Analysis of Penetration Process Based on Flash Spectrum[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(03): 718-723. |
[9] |
YU Cheng-hao, YE Ji-fei*, ZHOU Wei-jing, CHANG Hao*, GUO Wei. Characteristics of the Plasma Plume and Micro-Impulse Generated by
Irradiating the Aluminum Target With a Nanosecond Laser Pulse at
Oblique Incidence[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(03): 933-939. |
[10] |
WANG Wei, WANG Yong-gang*, WU Zhong-hang, RAO Jun-feng, JIANG Song, LI Zi. Study on Spectral Characteristics of Pulsed Argon Vacuum Dielectric
Barrier Discharge[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(02): 455-459. |
[11] |
LI Ru, YANG Xin, XING Qian-yun, ZHANG Yu. Emission Spectroscopy Study of Remote Ar Plasma[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(02): 394-400. |
[12] |
HAO Jun1, WANG Yu2, LIU Cong2, WU Zan2, SHAO Peng2, ZU Wen-chuan2*. Application of Solution Cathode Glow Discharge-Atomic Emission Spectrometry for the Rapid Determination of Calcium in Milk[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(12): 3797-3801. |
[13] |
YANG Kun, CHEN Lei*, CHENG Fan-chong, PEI Huan, LIU Gui-ming, WANG Bao-huai, ZENG Wen. Emission Spectroscopy Diagnosis of Air Gliding Arc Plasma Under
Atmospheric Pressure Condition[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(10): 3006-3011. |
[14] |
HU Xuan1, CHENG Zi-hui1*, ZHANG Shu-chao2, SHI Lei2. Matrix Separation-Determination of Rare Earth Oxides in Bauxite by
Inductively Coupled Plasma-Atomic Emission Spectrometry[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(10): 3130-3134. |
[15] |
LIU Pan1, 2, LI Jing-bin1, ZHANG Jian-hao1, ZHANG Yi1, CHANG Guo-liang1, HE Peng-fei1, ZHANG Bin-bin1, ZHANG Xin-yao1, 3. Determination of Phosphorus in Welding Flux by Inductively Coupled Plasma Atomic Emission Spectrometry With Ultrasonic Assisted
Hydrochloric Acid Extraction[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(09): 2824-2829. |
|
|
|
|