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

A. K. Rossall; G. J. Tallents; E. Wagenaars; N. C. Woolsey

doi:10.1109/TPS.2011.2161341

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

A. K. Rossall, G. J. Tallents, E. Wagenaars, N. C. Woolsey

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

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 μ m, and a 5-Hz repetition rate was utilized. Over multiple shots at an irradiance of 10 ¹⁵Wcm ^-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.

Original language	English
Article number	5976467
Pages (from-to)	2788-2789
Number of pages	2
Journal	IEEE Transactions on Plasma Science
Volume	39
Issue number	11 PART 1
DOIs	https://doi.org/10.1109/TPS.2011.2161341
Publication status	Published - 1 Nov 2011
Externally published	Yes

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abstract = "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 μ m, and a 5-Hz repetition rate was utilized. Over multiple shots at an irradiance of 10 15Wcm -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.",

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

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