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 journalArticle

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 languageEnglish
Article number5976467
Pages (from-to)2788-2789
Number of pages2
JournalIEEE Transactions on Plasma Science
Volume39
Issue number11 PART 1
DOIs
Publication statusPublished - 1 Nov 2011
Externally publishedYes

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