期刊
PHYSICS OF PLASMAS
卷 19, 期 12, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.4773439
关键词
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资金
- National Natural Science Foundation of China [51207154, 51222701, 51110161, 11076026]
- National Basic Research Program of China [2011CB209402]
- Chinese Academy of Sciences [2012T1G0021]
- State Key Laboratory of Electrical Insulation and Power Equipment in Xi'an Jiaotong University [EIPE12204]
- RFBR [12-08-91150-GammaPhiEH_a, 12-08-00105-a]
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. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4773439]
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