Open AccessX-ray generation in repetitive pulsed discharge in atmospheric air with a point-to-plane gap
Author(s) -
Cheng Zhang,
Tao Shao,
Zheng Niu,
Dongdong Zhang,
Jue Wang,
Ping Yan
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.035202
Subject(s) - nanosecond , photomultiplier , full width at half maximum , scintillator , electron , physics , x ray , atomic physics , range (aeronautics) , rise time , materials science , optics , detector , laser , voltage , nuclear physics , composite material , quantum mechanics
Research on the characteristics of X-ray emission in repetitive pulsed discharge is associated with the behavior of runaway electrons and the mechanism of nanosecond pulsed discharge. In the experiments, X-ray emission in the repetitive pulsed discharge with a rise time of 15 ns and an FWHM of 30-40 ns in atmospheric air is directly measured by a detection system consisting of NaI scintillator and a photomultiplier tube, and the energy range of the X-ray detector is demonstrated to be between 10 and 130 keV. Results show that main part of the energy of X-ray is from 20 keV to 90 keV, and a little X-ray with an the energy of less than 20 keV or more than 90 keV is detected. X-ray emission increases with the increase of pulse repetition frequency, and it has a peak value with the variation of air gap spacing. There is a maximum value of X-ray emission when the nanosecond discharge appears in a diffuse mode.