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28 March 2024 |
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Article overview
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Meter-scale spark X-ray spectrumstatistics | B. E. Carlson
; N. Østgaard
; P. Kochkin
; Ø. Grondahl
; R. Nisi
; K. Weber
; Z. Scherrer
; K. LeCaptain
; | Date: |
18 May 2016 | Abstract: | X-ray emission by sparks implies bremsstrahlung from a population of
energetic electrons, but the details of this process remain a mystery. We
present detailed statistical analysis of X-ray spectra detected by multiple
detectors during sparks produced by 1 MV negative high-voltage pulses with 1
$mu$s risetime. With over 900 shots, we statistically analyze the signals,
assuming that the distribution of spark X-ray fluence behaves as a power law
and that the energy spectrum of X-rays detectable after traversing $sim$2 m of
air and a thin aluminum shield is exponential. We then determine the parameters
of those distributions by fitting cumulative distribution functions to the
observations. The fit results match the observations very well if the mean of
the exponential X-ray energy distribution is 86 $pm$ 7 keV and the spark X-ray
fluence power law distribution has index -1.29 $pm$ 0.04 and spans at least 3
orders of magnitude in fluence. | Source: | arXiv, 1605.5570 | Services: | Forum | Review | PDF | Favorites |
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