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Enhancement of X-Ray Generation in a High-Repetition-Rate Laser-Plasma Experiment

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Publication details

JournalIEEE transactions on plasma science
DatePublished - Nov 2011
Issue number11
Number of pages2
Pages (from-to)2788-2789
Original languageEnglish


An approximate fourfold enhancement of X-ray generation per shot has been observed from a laser plasma after multiple laser shots onto a 2-mm-thick aluminum target produced ablation ("burn-through") over the thickness of the target. A table-top Nd:YAG laser with a pulse energy of 0.5 J, a pulse duration of 170 ps, a wavelength of 1.06 mu m, and a 5-Hz repetition rate was utilized. Over multiple shots at an irradiance of 10(15) W . cm(-2), the peak hot electron temperature remained approximately constant at 6-7.5 +/- 0.5 keV, indicating that the increased X-ray yield when the laser irradiates a burnt-through target results from an increase in the total number of hot electrons.

    Research areas

  • Laser beams, plasma properties, plasma sources, plasmas

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