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Resonant plasma excitation by single-cycle THz pulses

In this paper, an alternative perspective for the generation of millimetric high-gradient resonant plasma waves is discussed. This method is based on the plasma-wave excitation by energetic single-cycle THz pulses whose temporal length is comparable to the plasma wavelength. The excitation regime di...

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Autores principales: Curcio, A., Marocchino, A., Dolci, V., Lupi, S., Petrarca, M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5773702/
https://www.ncbi.nlm.nih.gov/pubmed/29348511
http://dx.doi.org/10.1038/s41598-017-18312-y
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author Curcio, A.
Marocchino, A.
Dolci, V.
Lupi, S.
Petrarca, M.
author_facet Curcio, A.
Marocchino, A.
Dolci, V.
Lupi, S.
Petrarca, M.
author_sort Curcio, A.
collection PubMed
description In this paper, an alternative perspective for the generation of millimetric high-gradient resonant plasma waves is discussed. This method is based on the plasma-wave excitation by energetic single-cycle THz pulses whose temporal length is comparable to the plasma wavelength. The excitation regime discussed in this paper is the quasi-nonlinear regime that can be achieved when the normalized vector potential of the driving THz pulse is on the order of unity. To investigate this regime and determine the strength of the excited electric fields, a Particle-In-Cell (PIC) code has been used. It has been found that by exploiting THz pulses with characteristics currently available in laboratory, longitudinal electron plasma waves with electric gradients up to hundreds MV/m can be obtained. The mm-size nature of the resonant plasma wave can be of great utility for an acceleration scheme in which high-brightness electron bunches are injected into the wave to undergo a strong acceleration. The long-size nature of the acceleration bucket with respect to the short length of the electron bunches can be handled in a more robust manner in comparison with the case when micrometric waves are employed.
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spelling pubmed-57737022018-01-26 Resonant plasma excitation by single-cycle THz pulses Curcio, A. Marocchino, A. Dolci, V. Lupi, S. Petrarca, M. Sci Rep Article In this paper, an alternative perspective for the generation of millimetric high-gradient resonant plasma waves is discussed. This method is based on the plasma-wave excitation by energetic single-cycle THz pulses whose temporal length is comparable to the plasma wavelength. The excitation regime discussed in this paper is the quasi-nonlinear regime that can be achieved when the normalized vector potential of the driving THz pulse is on the order of unity. To investigate this regime and determine the strength of the excited electric fields, a Particle-In-Cell (PIC) code has been used. It has been found that by exploiting THz pulses with characteristics currently available in laboratory, longitudinal electron plasma waves with electric gradients up to hundreds MV/m can be obtained. The mm-size nature of the resonant plasma wave can be of great utility for an acceleration scheme in which high-brightness electron bunches are injected into the wave to undergo a strong acceleration. The long-size nature of the acceleration bucket with respect to the short length of the electron bunches can be handled in a more robust manner in comparison with the case when micrometric waves are employed. Nature Publishing Group UK 2018-01-18 /pmc/articles/PMC5773702/ /pubmed/29348511 http://dx.doi.org/10.1038/s41598-017-18312-y Text en © The Author(s) 2018 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/.
spellingShingle Article
Curcio, A.
Marocchino, A.
Dolci, V.
Lupi, S.
Petrarca, M.
Resonant plasma excitation by single-cycle THz pulses
title Resonant plasma excitation by single-cycle THz pulses
title_full Resonant plasma excitation by single-cycle THz pulses
title_fullStr Resonant plasma excitation by single-cycle THz pulses
title_full_unstemmed Resonant plasma excitation by single-cycle THz pulses
title_short Resonant plasma excitation by single-cycle THz pulses
title_sort resonant plasma excitation by single-cycle thz pulses
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5773702/
https://www.ncbi.nlm.nih.gov/pubmed/29348511
http://dx.doi.org/10.1038/s41598-017-18312-y
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