Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3719801m&link_type=abstract
Geophysical Research Letters, Volume 37, Issue 19, CiteID L19801
Astronomy and Astrophysics
Astrophysics
7
Magnetospheric Physics: Electric Fields (2411), Atmospheric Processes: Lightning, Solar Physics, Astrophysics, And Astronomy: X-Rays, Gamma Rays, And Neutrinos
Scientific paper
X-rays produced by laboratory sparks in air at atmospheric pressure for rod-rod and rod-plane configurations were observed. A total of 510 sparks were applied for both polarities. The paper shows the effects of the voltage rise time and the peak voltage in the generation of X-rays. It is found here that shorter rise times and high peak voltages tend to produce more X-rays emissions with higher energies than longer front waveforms or lower peak voltages. In a similar way, higher voltage variations produce more energetic emissions. This finding suggests that the variation of the electric field before the breakdown can play a fundamental role in the X-ray production. The results are similar with the observations of X-rays produced in natural lightning where detections have been associated to leader steps before the return stroke.
March Víctor
Montanya Joan
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