Localization of ionization-induced trapping in a laser wakefield accelerator using a density down-ramp

M. Hansson; T. L. Audet; H. Ekerfelt; B. Aurand; I. Gallardo González; F. G. Desforges; X. Davoine; A. Maitrallain; S. Reymond; P. Monot; Anders Persson; S. Dobosz Dufrénoy; C. G. Wahlström; B. Cros; O. Lundh

doi:10.1088/0741-3335/58/5/055009

Localization of ionization-induced trapping in a laser wakefield accelerator using a density down-ramp

M. Hansson, T. L. Audet, H. Ekerfelt, B. Aurand, I. Gallardo González, F. G. Desforges, X. Davoine, A. Maitrallain, S. Reymond, P. Monot, Anders Persson, S. Dobosz Dufrénoy, C. G. Wahlström, B. Cros, O. Lundh

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

Abstract

We report on a study on controlled trapping of electrons, by field ionization of nitrogen ions, in laser wakefield accelerators in variable length gas cells. In addition to ionization-induced trapping in the density plateau inside the cells, which results in wide, but stable, electron energy spectra, a regime of ionization-induced trapping localized in the density down-ramp at the exit of the gas cells, is found. The resulting electron energy spectra are peaked, with 10% shot-to-shot fluctuations in peak energy. Ionization-induced trapping of electrons in the density down-ramp is a way to trap and accelerate a large number of electrons, thus improving the efficiency of the laser-driven wakefield acceleration.

Original language	English
Article number	055009
Journal	Plasma Physics and Controlled Fusion
Volume	58
Issue number	5
DOIs	https://doi.org/10.1088/0741-3335/58/5/055009
Publication status	Published - 2016 Mar 23

Subject classification (UKÄ)

Atom and Molecular Physics and Optics

Free keywords

down-ramp
ionization
laser
trapping
wakefield

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10.1088/0741-3335/58/5/055009

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Hansson, M., Audet, T. L., Ekerfelt, H., Aurand, B., Gallardo González, I., Desforges, F. G., Davoine, X., Maitrallain, A., Reymond, S., Monot, P., Persson, A., Dobosz Dufrénoy, S., Wahlström, C. G., Cros, B., & Lundh, O. (2016). Localization of ionization-induced trapping in a laser wakefield accelerator using a density down-ramp. Plasma Physics and Controlled Fusion, 58(5), Article 055009. https://doi.org/10.1088/0741-3335/58/5/055009

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title = "Localization of ionization-induced trapping in a laser wakefield accelerator using a density down-ramp",

abstract = "We report on a study on controlled trapping of electrons, by field ionization of nitrogen ions, in laser wakefield accelerators in variable length gas cells. In addition to ionization-induced trapping in the density plateau inside the cells, which results in wide, but stable, electron energy spectra, a regime of ionization-induced trapping localized in the density down-ramp at the exit of the gas cells, is found. The resulting electron energy spectra are peaked, with 10% shot-to-shot fluctuations in peak energy. Ionization-induced trapping of electrons in the density down-ramp is a way to trap and accelerate a large number of electrons, thus improving the efficiency of the laser-driven wakefield acceleration.",

keywords = "down-ramp, ionization, laser, trapping, wakefield",

author = "M. Hansson and Audet, {T. L.} and H. Ekerfelt and B. Aurand and {Gallardo Gonz{\'a}lez}, I. and Desforges, {F. G.} and X. Davoine and A. Maitrallain and S. Reymond and P. Monot and Anders Persson and {Dobosz Dufr{\'e}noy}, S. and Wahlstr{\"o}m, {C. G.} and B. Cros and O. Lundh",

year = "2016",

month = mar,

day = "23",

doi = "10.1088/0741-3335/58/5/055009",

language = "English",

volume = "58",

journal = "Plasma Physics and Controlled Fusion",

issn = "0741-3335",

publisher = "IOP Publishing",

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Hansson, M, Audet, TL, Ekerfelt, H, Aurand, B, Gallardo González, I, Desforges, FG, Davoine, X, Maitrallain, A, Reymond, S, Monot, P, Persson, A, Dobosz Dufrénoy, S, Wahlström, CG, Cros, B & Lundh, O 2016, 'Localization of ionization-induced trapping in a laser wakefield accelerator using a density down-ramp', Plasma Physics and Controlled Fusion, vol. 58, no. 5, 055009. https://doi.org/10.1088/0741-3335/58/5/055009

TY - JOUR

T1 - Localization of ionization-induced trapping in a laser wakefield accelerator using a density down-ramp

AU - Hansson, M.

AU - Audet, T. L.

AU - Ekerfelt, H.

AU - Aurand, B.

AU - Gallardo González, I.

AU - Desforges, F. G.

AU - Davoine, X.

AU - Maitrallain, A.

AU - Reymond, S.

AU - Monot, P.

AU - Persson, Anders

AU - Dobosz Dufrénoy, S.

AU - Wahlström, C. G.

AU - Cros, B.

AU - Lundh, O.

PY - 2016/3/23

Y1 - 2016/3/23

N2 - We report on a study on controlled trapping of electrons, by field ionization of nitrogen ions, in laser wakefield accelerators in variable length gas cells. In addition to ionization-induced trapping in the density plateau inside the cells, which results in wide, but stable, electron energy spectra, a regime of ionization-induced trapping localized in the density down-ramp at the exit of the gas cells, is found. The resulting electron energy spectra are peaked, with 10% shot-to-shot fluctuations in peak energy. Ionization-induced trapping of electrons in the density down-ramp is a way to trap and accelerate a large number of electrons, thus improving the efficiency of the laser-driven wakefield acceleration.

AB - We report on a study on controlled trapping of electrons, by field ionization of nitrogen ions, in laser wakefield accelerators in variable length gas cells. In addition to ionization-induced trapping in the density plateau inside the cells, which results in wide, but stable, electron energy spectra, a regime of ionization-induced trapping localized in the density down-ramp at the exit of the gas cells, is found. The resulting electron energy spectra are peaked, with 10% shot-to-shot fluctuations in peak energy. Ionization-induced trapping of electrons in the density down-ramp is a way to trap and accelerate a large number of electrons, thus improving the efficiency of the laser-driven wakefield acceleration.

KW - down-ramp

KW - ionization

KW - laser

KW - trapping

KW - wakefield

UR - http://www.scopus.com/inward/record.url?scp=84965053099&partnerID=8YFLogxK

U2 - 10.1088/0741-3335/58/5/055009

DO - 10.1088/0741-3335/58/5/055009

M3 - Article

AN - SCOPUS:84965053099

SN - 0741-3335

VL - 58

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 5

M1 - 055009

ER -

Localization of ionization-induced trapping in a laser wakefield accelerator using a density down-ramp

Abstract

Subject classification (UKÄ)

Free keywords

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Development and Applications of a Laser-Wakefield X-ray Source (updated)

Numerical and Experimental Studies of Wakefield Accelerators

Development and Applications of a Laser-Wakefield X-ray Source

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