Electron-beam-generated x rays from X pinches

X pinches are well known to produce very small, dense plasma pinches (“micropinches”) that emit short bursts of 1.5 – 8 keV radiation [Shelkovenko et al. , Phys. Plasmas 9, 2165 (2002)]. X-ray radiation in the 8 – 100 keV range is also emitted, only a small portion of which is associated with the mi...

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Bibliographic Details
Published in:Physics of plasmas 2005-03, Vol.12 (3), p.033102-033102-7
Main Authors: Shelkovenko, T. A., Pikuz, S. A., Song, B. M., Chandler, K. M., Mitchell, M. D., Hammer, D. A., Ivanenkov, G. V., Mingaleev, A. R., Romanova, V. M.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRON BEAMS
PINCH EFFECT
PLASMA
PLASMA DIAGNOSTICS
SOFT X RADIATION
TAIL ELECTRONS
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Summary:X pinches are well known to produce very small, dense plasma pinches (“micropinches”) that emit short bursts of 1.5 – 8 keV radiation [Shelkovenko et al. , Phys. Plasmas 9, 2165 (2002)]. X-ray radiation in the 8 – 100 keV range is also emitted, only a small portion of which is associated with the micropinches. Beginning immediately after the soft x-ray burst, higher energy x-ray emission is observed that is attributed to energetic electrons accelerated in the gaps that appear in the X-pinch plasma structure. The temporal, spectral, and spatial properties of this higher energy radiation ( 8 – 100 keV ) have been studied using two ∼ 0.1 μ s pulsed power generators, one operating at up to 450 kA peak current and the other up to 270 kA . This radiation was also used for imaging in a low magnification configuration, and spatial resolution of a few tens of micrometers was demonstrated.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.1849798