摘要
目的研究水中高压脉冲放电的光辐射性质．方法通过高温计示波器系统，测量放电的光谱辐射亮度；采用灰体辐射模型，计算放电通道的温度和发射率；结合放电的电特性，分析这一过程中等离子体的光辐射特性．结果在电容器储能为３１２．５Ｊ、最大峰值电流为５０ｋＡ的条件下，计算得到的最高温度约为５×１０４Ｋ．光辐射能量的绝大部分分布在远紫外的范围（１０～２００ｎｍ）．结论水中放电的光辐射特性对应于放电的电特性．紫外光辐射是放电等离子体的主要释能方式之一．
Aim To study the characteristics of plasma radiation from pulsed discharges in water. Methods Pyrometer oscilloscope system was used to measure the brightness of the plasma radiation. The spark channel temperature and the distributions of the irradiance as a function of wavelength were obtained through a greybody radiation model. Results For a stored capacitor energy of 312 5 J, the spark channel temperature of 5×10 4 K was obtained with a peak current of 50 kA. Most of the plasma radiation energy is distributed in the far ultraviolet region of the spectrum (10￣200 nm). Conclusion Radiation of plasma underwater corresponds to its electric characteristics. Ultraviolet radiation is one of the principal form of energy which is released from a pulsed discharge in water.
出处
《北京理工大学学报》
EI
CAS
CSCD
1999年第1期8-12,共5页
Transactions of Beijing Institute of Technology
基金
中国工程物理研究院院外基金
