Experimental study on characteristic spectra and temperature properties of spark discharge plasma
-
摘要: 以皮秒时间分辨条纹相机和光谱仪为核心，以高压脉冲电源所产生的火花等离子体为研究对象，搭建了一套瞬态光谱与扫描高温计系统。实验中，考虑了针尖间隙和两极电压这两个影响因素，通过采集针尖高压击穿空气所产生火花的瞬态光谱，在对数据进行处理和标定后，结合普朗克的黑体辐射理论，实现对放电等离子体瞬态光谱与温度的诊断。研究结果表明，在针尖间隙相同的情况下，随着电压的增大，放电等离子体的发射光谱随之增强，并在一定电压范围内达到饱和。放电所产生的瞬态温度整体呈现上升趋势，并且通常在1.02～1.16 μs之间达到峰值，在针尖电压为10 kV时温度最高可达16 617 K。而在相同电压的情况下，随着间隙的增大，放电等离子体的发射光谱呈现先增强后减弱的情况，同时，放电温度在整体趋势上逐渐降低。Abstract: It is significant for the design and production of detonators and other initiating explosive devices to study the variation law between high-pressure spark discharge characteristics and loading high pressure and spark gap. Taking the picosecond time-resolved streak camera and spectrometer as the core and the spark plasma generated by the high-voltage pulse power supply as the research object, a set of transient spectrum and scanning pyrometer systems was built. In the experiment, the two influencing factors of the tip gap and the two-pole voltage are considered. By collecting the transient spectrum of the spark generated by the high-voltage breakdown of the air at the tip, after processing and calibrating the data, combined with Plank’s blackbody radiation theory, the diagnosis of the transient spectrum and temperature of the discharge plasma is realized. The results show that under the same tip gap, with the increase of voltage, the emission spectrum of discharge plasma increases and reaches saturation in a specific voltage range. The transient temperature generated by the discharge shows an overall upward trend and usually gets a peak between 1.02−1.16 μs. When the tip voltage is 10 kV, the temperature can reach up to 16 617 K. In the case of the same voltage, as the gap increases, the emission spectrum of the discharge plasma first increases and then decreases, and the discharge temperature gradually drops in the overall trend.
-
图 5 电压8000 V，间隙0.5 mm时的火花光谱变化
Figure 5. Spark spectrum changes when the voltage is 8000 V and the gap is 0.5 mm
图 6 间隙0.5 mm，电压8000 V时放电火花温度拟合结果随时间变化
Figure 6. Fitting result of the discharge spark temperature changes with time when the gap is 0.5 mm and the voltage is 8000 V
图 7 0.5 mm间隙时放电火花在各电压下光谱随时间的变化
Figure 7. Change of spectrum with time under different voltages when the gap is 0.5 mm
图 8 在0.5 mm间隙条件下1.02 μs时各电压下的火花光谱
Figure 8. Spark spectrum at each voltage at 1.02 μs under the condition of 0.5 mm gap
图 9 各电压下放电等离子体温度随时间的变化
Figure 9. Change of discharge plasma temperature with time under different voltages
图 10 10000 V电压时放电火花在各间隙下光谱随时间的变化
Figure 10. Change of spectrum with time under different gaps when the voltage is 10000 V
图 11 10000 V电压条件下1.02 μs时各间隙下的火花光谱
Figure 11. Spark spectrum at each gap at 1.02 μs under the condition of 10000 V voltage
-
[1] Eckhoff R K. Minimum ignition energy (MIE) — a basic ignition sensitivity parameter in design of intrinsically safe electrical apparatus for explosive dust clouds[J]. Journal of Loss Prevention in the Process Industries, 2002, 15(4): 305-310. doi: 10.1016/S0950-4230(02)00003-7 [2] 李威, 王志新, 史莉. 纳秒脉冲火花放电等离子体发射光谱特性研究[J]. 电工电能新技术, 2016, 35(11):29-36 doi: 10.3969/j.issn.1003-3076.2016.11.006Li Wei, Wang Zhixin, Shi Li. Emission spectrum characteristics of nanosecond pulsed spark plasma[J]. Advanced Technology of Electrical Engineering and Energy, 2016, 35(11): 29-36 doi: 10.3969/j.issn.1003-3076.2016.11.006 [3] 贺芝宇, 周华珍, 黄秀光, 等. 激光加载下铝材料的冲击温度测量[J]. 强激光与粒子束, 2016, 28:042002 doi: 10.11884/HPLPB201628.122002He Zhiyu, Zhou Huazhen, Huang Xiuguang, et al. Measurements of aluminum's shock temperature on SG-II high-power laser facility[J]. High Power Laser and Particle Beams, 2016, 28: 042002 doi: 10.11884/HPLPB201628.122002 [4] Gregor M C, Boni R, Sorce A, et al. Absolute calibration of the OMEGA streaked optical pyrometer for temperature measurements of compressed materials[J]. Review of Scientific Instruments, 2016, 87: 114903. doi: 10.1063/1.4968023 [5] Methling R, Franke S, Gortschakow S, et al. Anode surface temperature determination in high-current vacuum arcs by different methods[J]. IEEE Transactions on Plasma Science, 2017, 45(8): 2099-2107. doi: 10.1109/TPS.2017.2712562 [6] Héreil P L, Mabire C. Temperature measurement of tin under shock compression[J]. AIP Conference Proceedings, 2002, 620(1): 1235-1238. [7] Miller J E, Boehly T R, Melchior A, et al. Streaked optical pyrometer system for laser-driven shock-wave experiments on OMEGA[J]. Review of Scientific Instruments, 2007, 78: 034903. doi: 10.1063/1.2712189 [8] 易荣清, 李三伟, 江少恩, 等. 高时间分辨辐射温度测量技术[J]. 强激光与粒子束, 2008, 20(6):965-968Yi Rongqing, Li Sanwei, Jiang Shaoen, et al. Measurement of radiation temperature with high time-resolution[J]. High Power Laser and Particle Beams, 2008, 20(6): 965-968 [9] Ni P A, Bieniosek F M, Henestroza E, et al. A multi-wavelength streak-optical-pyrometer for warm-dense matter experiments at NDCX-I and NDCX-II[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2014, 733: 12-17. [10] 王中辉, 蒋力培, 齐铂金, 等. 发展中的电弧等离子体温度场诊断技术[J]. 材料科学与工艺, 2007, 15(5):654-657 doi: 10.3969/j.issn.1005-0299.2007.05.015Wang Zhonghui, Jiang Lipei, Qi Bojin, et al. Developing diagnostics of the arc plasma temperature field[J]. Materials Science and Technology, 2007, 15(5): 654-657 doi: 10.3969/j.issn.1005-0299.2007.05.015 [11] 沈华, 陈磊, 朱日宏, 等. 等离子体激发和辐射温度瞬态光谱测试方法[J]. 光学学报, 2009, 29(8):2216-2220 doi: 10.3788/AOS20092908.2216Shen Hua, Chen Lei, Zhu Rihong, et al. Spectroscopic diagnostication of transient excitation and radiation temperature of plasma[J]. Acta Optica Sinica, 2009, 29(8): 2216-2220 doi: 10.3788/AOS20092908.2216 [12] Luo Tianshu, Chen Zhe, Luo Haiyun, et al. Radial and axial temperature distribution of nano-second pulsed spark discharge[C]//2020 IEEE 1st China International Youth Conference on Electrical Engineering. 2020: 1-5. [13] 杨宗举, 戴景民, 杨林, 等. 用于真空弧等离子体放电阴极温度场测量的多光谱高温计[J]. 光谱学与光谱分析, 2021, 41(1):60-64Yang Zongju, Dai Jingmin, Yang Lin, et al. A multi-spectral pyrometer for measuring cathode temperature field of vacuum arc plasma discharge[J]. Spectroscopy and Spectral Analysis, 2021, 41(1): 60-64 [14] Fat'yanov O V, Asimow P D. Contributed review: absolute spectral radiance calibration of fiber-optic shock-temperature pyrometers using a coiled-coil irradiance standard lamp[J]. Review of Scientific Instruments, 2015, 86: 101502. doi: 10.1063/1.4932578 [15] 广州景颐光电科技有限公司. 辐射校准光源[EB/OL]. http://www.gzjygd.com/product_view_466_224.html. [16] He Zhiyu, Jia Guo, Zhang Fan, et al. Thermodynamic and electrical properties of laser-shocked liquid deuterium[J]. The European Physical Journal D, 2018, 72: 3. doi: 10.1140/epjd/e2017-80330-4 -
下载:
点击查看大图
计量
- 文章访问数: 196
- HTML全文浏览量: 76
- PDF下载量: 39
- 被引次数: 0
