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Ultrafast imaging of laser driven shock waves using Betatron x-rays from a laser Wakefield accelerator

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Title: Ultrafast imaging of laser driven shock waves using Betatron x-rays from a laser Wakefield accelerator
Authors: Wood, JC
Chapman, DJ
Poder, K
Lopes, NC
Rutherford, ME
White, TG
Albert, F
Behm, KT
Booth, N
Bryant, JSJ
Foster, PS
Glenzer, S
Hill, E
Krushelnick, K
Najmudin, Z
Pollock, BB
Rose, S
Schumaker, W
Scott, RHH
Sherlock, M
Thomas, AGR
Zhao, Z
Eakins, D
Mangles, SPD
Item Type: Journal Article
Abstract: Betatron radiation from laser wakefield accelerators is an ultrashort pulsed source of hard, synchrotron-like x-ray radiation. It emanates from a centimetre scale plasma accelerator producing GeV level electron beams. In recent years betatron radiation has been developed as a unique source capable of producing high resolution x-ray images in compact geometries. However, until now, the short pulse nature of this radiation has not been exploited. This report details the first experiment to utilise betatron radiation to image a rapidly evolving phenomenon by using it to radiograph a laser driven shock wave in a silicon target. The spatial resolution of the image is comparable to what has been achieved in similar experiments at conventional synchrotron light sources. The intrinsic temporal resolution of betatron radiation is below 100 fs, indicating that significantly faster processes could be probed in future without compromising spatial resolution. Quantitative measurements of the shock velocity and material density were made from the radiographs recorded during shock compression and were consistent with the established shock response of silicon, as determined with traditional velocimetry approaches. This suggests that future compact betatron imaging beamlines could be useful in the imaging and diagnosis of high-energy-density physics experiments.
Issue Date: 20-Jul-2018
Date of Acceptance: 9-Jul-2018
URI: http://hdl.handle.net/10044/1/59197
DOI: 10.1038/s41598-018-29347-0
ISSN: 2045-2322
Publisher: Nature Publishing Group
Journal / Book Title: Scientific Reports
Volume: 8
Copyright Statement: © 2018 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Sponsor/Funder: AWE Plc
Funder's Grant Number: 30315778/0
Keywords: Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
ELECTRON-BEAMS
PHASE-TRANSITION
PLASMA
SILICON
REGIME
physics.plasm-ph
Notes: 11 pages, 7 figures
Publication Status: Published
Article Number: 11010
Appears in Collections:Physics
Plasma Physics
Faculty of Natural Sciences



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