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

Rossall, A. K., Tallents, G. J., Wagenaars, E. and Woolsey, N.C. (2011) Enhancement of X-Ray Generation in a High-Repetition-Rate Laser-Plasma Experiment. IEEE Transactions on Plasma Science, 39 (11). pp. 2788-2789. ISSN 0093-3813

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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 μm, and a 5-Hz repetition rate was utilized. Over multiple shots at an irradiance of 1015 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.

Item Type: Article
Uncontrolled Keywords: Al,Aluminum,Laser ablation,Laser beams,Laser fusion,Laser theory,Plasma temperature,X-ray generation,X-ray lasers,aluminium,energy 0.5 J,fourfold enhancement approximation,frequency 5 Hz,high-repetition-rate laser-plasma experiment,hot electron temperature,plasma X-ray sources,plasma light propagation,plasma properties,plasma sources,plasmas,pulse duration,pulse energy,size 2 mm,time 170 ps,wavelength 1.06 mum
Subjects: Q Science > QC Physics
Schools: School of Computing and Engineering
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Depositing User: Andrew Rossall
Date Deposited: 13 Apr 2016 11:22
Last Modified: 28 Aug 2021 11:58


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