期刊
REVIEW OF SCIENTIFIC INSTRUMENTS
卷 81, 期 12, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.3506637
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资金
- National Natural Science Foundation of China [NSFC 50707032, 11076026]
- Chinese Academy of Sciences [KGCX2-YW-339]
- Tsinghua University [SKLD09KZ05]
Measurement of x-ray emission is an important parameter to investigate runaway behavior of fast electrons produced in nanosecond-pulse gas discharge. An online detection system of x rays is described in this paper, and the system consists of an x-ray detector with NaI (Tl) scintillator and photomultiplier tube, and an integrated multichannel analyzer. The system is responsible for detecting x-ray emission signal, processing the detected signals, and scaling the energy distribution. The calibration results show that every channel of the detection system represents a given x-ray energy and various x rays can be divided into different energy ranges between 10 and 130 keV. For a repetitive nanosecond-pulse breakdown between highly nonuniform gaps in open air, an energy distribution is obtained using the online detection system. It shows that the x-ray emission is a continuous spectrum and the x rays of above 60 keV dominate in the detected energy distribution. (C) 2010 American Institute of Physics. [doi:10.1063/1.3506637]
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