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Light Radiation from Pulsed Discharges in Water

Liu Xiaochun Feng Changgen(Department of Engineering Safety, Beijing Institute of Technology, Beijing100081)Zhu Zuliang Xu Yizhi Xu Zheng(China Academy of Engineering Physics, Chengdu610003)  
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.
【Fund】: 中国工程物理研究院院外基金
【CateGory Index】: O432.1
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