Demonstration Of A Low Electromagnetic Pulse Laser-Driven Argon Gas Jet X-Ray Source
APPLIED PHYSICS LETTERS(2012)
摘要
Laser-produced plasmas are often used as bright x-ray backlighters for time-resolved plasma diagnostics, but such backlighters simultaneously generate damaging electromagnetic pulse (EMP). A laser-driven Ar gas jet x-ray source has been measured with magnetic flux B-dot probes to produce 20 times +/-37% less integrated EMP in the 0.5-2.5 GHz band than a solid chlorinated plastic foil, while retaining 85% of the laser to approximate to 3 keV x-ray conversion efficiency. These results are important for future backlighter development, since tailoring target density may provide a way to reduce EMP even as laser power increases. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4734506]
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