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Generation of intense quasi-electrostatic fields due to deposition of particles accelerated by petawatt-range laser-matter interactions

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Title: Generation of intense quasi-electrostatic fields due to deposition of particles accelerated by petawatt-range laser-matter interactions
Authors: Consoli, F
De Angelis, R
Robinson, TS
Giltrap, S
Hicks, GS
Ditter, EJ
Ettlinger, OC
Najmudin, Z
Notley, M
Smith, RA
Item Type: Journal Article
Abstract: We demonstrate here for the first time that charge emitted by laser-target interactions at petawatt peak-powers can be efficiently deposited on a capacitor-collector structure far away from the target and lead to the rapid (tens of nanoseconds) generation of large quasi-static electric fields over wide (tens-of-centimeters scale-length) regions, with intensities much higher than common ElectroMagnetic Pulses (EMPs) generated by the same experiment in the same position. A good agreement was obtained between measurements from a classical field-probe and calculations based on particle-flux measurements from a Thomson spectrometer. Proof-of-principle particle-in-cell simulations reproduced the measurements of field evolution in time, giving a useful insight into the charging process, generation and distribution of fields. The understanding of this charging phenomenon and of the related intense fields, which can reach the MV/m order and in specific configurations might also exceed it, is very important for present and future facilities studying laser-plasma-acceleration and inertial-confinement-fusion, but also for application to the conditioning of accelerated charged-particles, the generation of intense electric and magnetic fields and many other multidisciplinary high-power laser-driven processes.
Issue Date: 12-Jun-2019
Date of Acceptance: 23-May-2019
URI: http://hdl.handle.net/10044/1/70939
DOI: https://dx.doi.org/10.1038/s41598-019-44937-2
ISSN: 2045-2322
Publisher: Nature Publishing Group
Journal / Book Title: Scientific Reports
Volume: 9
Copyright Statement: © 2019 The Author(s). Open Access. 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: Engineering & Physical Science Research Council (E
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Engineering & Physical Science Research Council (EPSRC)
Imperial College Trust
Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/K022415/1
ST/P000835/1
ST/S001956/1
EP/H500227/1
PHPL_P47646
N/A
Publication Status: Published
Conference Place: England
Article Number: 8551
Appears in Collections:Physics
Plasma Physics



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