Peculiarities of detecting pulses of runaway electrons and X-rays generated by high-voltage nanosecond discharges in open atmosphere View Full Text


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Article Info

DATE

2010-03

AUTHORS

L. P. Babich, T. V. Loiko

ABSTRACT

Peculiarities of detecting pulses of high-energy runaway electrons and the accompanying X-rays generated by high-voltage nanosecond discharges at high overvoltages in dense gases are discussed. Methods for overcoming difficulties encountered in such measurements are demonstrated. Different techniques for detecting runaway electrons and X-rays generated by discharges in open atmosphere are described, and typical errors that may be done when interpreting measurement results are considered. Experiments with the use of a small-size generator of nanosecond pulses with the idle-running voltage of 250–270 kV and stored energy of ∼0.5 J have been carried out. It is shown that, in measuring runaway electron pulses by using an experimental configuration with a grid anode, a major portion of the recorded signal is attributed to electromagnetic disturbances. It is found that X-rays are mainly generated due to the deceleration of runaway electrons in the anode, rather than in gas. The number of runaway electrons with energies ∼300 keV does not exceed 109 per shot, and the X-ray dose is 60–200 μR/shot, depending on the anode material. More... »

PAGES

263-270

References to SciGraph publications

  • 2002. Glow-Like Discharges with Runaway Electrons in ELECTRON KINETICS AND APPLICATIONS OF GLOW DISCHARGES
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    http://scigraph.springernature.com/pub.10.1134/s1063780x10030086

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    http://dx.doi.org/10.1134/s1063780x10030086

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