1. X-ray emission from a nanosecond-pulse discharge in an inhomogeneous electric field at atmospheric pressure.
- Author
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Zhang, Cheng, Shao, Tao, Tarasenko, Victor, Ma, Hao, Ren, Chengyan, Kostyrya, Igor D., Zhang, Dongdong, and Yan, Ping
- Subjects
X-ray spectroscopy ,ELECTRIC fields ,ATMOSPHERIC pressure ,PHYSICS experiments ,ELECTRIC spark ,ELECTRIC discharges - Abstract
This paper describes experimental studies of the dependence of the X-ray intensity on the anode material in nanosecond high-voltage discharges. The discharges were generated by two nanosecond-pulse generators in atmospheric air with a highly inhomogeneous electric field by a tube-plate gap. The output pulse of the first generator (repetitive pulse generator) has a rise time of about 15 ns and a full width at half maximum of 30-40 ns. The output of the second generator (single pulse generator) has a rise time of about 0.3 ns and a full width at half maximum of 1 ns. The electrical characteristics and the X-ray emission of nanosecond-pulse discharge in atmospheric air are studied by the measurement of voltage-current waveforms, discharge images, X-ray count and dose. Our experimental results showed that the anode material rarely affects electrical characteristics, but it can significantly affect the X-ray density. Comparing the density of X-rays, it was shown that the highest x-rays density occurred in the diffuse discharge in repetitive pulse mode, then the spark discharge with a small air gap, and then the corona discharge with a large air gap, in which the X-ray density was the lowest. Therefore, it could be confirmed that the bremsstrahlung at the anode contributes to the X-ray emission from nanosecond-pulse discharges. [ABSTRACT FROM AUTHOR]
- Published
- 2012
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