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    Rights statement: This is an author-created, un-copyedited version of an article accepted for publication/published in Plasma Physics and Controlled Fusion. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at doi:10.1088/0741-3335/58/10/105003

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Characterization of electrons and x-rays produced using chirped laser pulses in a laser wakefield accelerator

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Characterization of electrons and x-rays produced using chirped laser pulses in a laser wakefield accelerator. / Zhao, T. Z.; Behm, K.; He, Z-H; Maksimchuk, A.; Nees, J. A.; Yanovsky, V.; Thomas, A. G. R.; Krushelnick, K.

In: Plasma Physics and Controlled Fusion, Vol. 58, No. 10, 105003, 10.2016.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Zhao, TZ, Behm, K, He, Z-H, Maksimchuk, A, Nees, JA, Yanovsky, V, Thomas, AGR & Krushelnick, K 2016, 'Characterization of electrons and x-rays produced using chirped laser pulses in a laser wakefield accelerator', Plasma Physics and Controlled Fusion, vol. 58, no. 10, 105003. https://doi.org/10.1088/0741-3335/58/10/105003

APA

Zhao, T. Z., Behm, K., He, Z-H., Maksimchuk, A., Nees, J. A., Yanovsky, V., Thomas, A. G. R., & Krushelnick, K. (2016). Characterization of electrons and x-rays produced using chirped laser pulses in a laser wakefield accelerator. Plasma Physics and Controlled Fusion, 58(10), [105003]. https://doi.org/10.1088/0741-3335/58/10/105003

Vancouver

Zhao TZ, Behm K, He Z-H, Maksimchuk A, Nees JA, Yanovsky V et al. Characterization of electrons and x-rays produced using chirped laser pulses in a laser wakefield accelerator. Plasma Physics and Controlled Fusion. 2016 Oct;58(10). 105003. https://doi.org/10.1088/0741-3335/58/10/105003

Author

Zhao, T. Z. ; Behm, K. ; He, Z-H ; Maksimchuk, A. ; Nees, J. A. ; Yanovsky, V. ; Thomas, A. G. R. ; Krushelnick, K. / Characterization of electrons and x-rays produced using chirped laser pulses in a laser wakefield accelerator. In: Plasma Physics and Controlled Fusion. 2016 ; Vol. 58, No. 10.

Bibtex

@article{2509c7604d3b4ffd90f686a72810a7a9,
title = "Characterization of electrons and x-rays produced using chirped laser pulses in a laser wakefield accelerator",
abstract = "The electron injection process into a plasma-based laser wakefield accelerator can be influenced by modifying the parameters of the driver pulse. We present an experimental study on the combined effect of the laser pulse duration, pulse shape, and frequency chirp on the electron injection and acceleration process and the associated radiation emission for two different gas types-a 97.5% He and 2.5% N-2 mixture and pure He. In general, the shortest pulse duration with minimal frequency chirp produced the highest energy electrons and the most charge. Pulses on the positive chirp side sustained electron injection and produced higher charge, but lower peak energy electrons, compared with negatively chirped pulses. A similar trend was observed for the radiant energy. The relationship between the radiant energy and the electron charge remained linear over a threefold change in the electron density and was independent of the drive pulse characteristics. X-ray spectra showed that ionization injection of electrons into the wakefield generally produced more photons than self-injection for all pulse durations/frequency chirp and had less of a spread in the number of photons around the peak x-ray energy.",
keywords = "laser wakefield accelerator, electrons, x-rays, chirped laser pulses, BEAMS",
author = "Zhao, {T. Z.} and K. Behm and Z-H He and A. Maksimchuk and Nees, {J. A.} and V. Yanovsky and Thomas, {A. G. R.} and K. Krushelnick",
note = "This is an author-created, un-copyedited version of an article accepted for publication/published in Plasma Physics and Controlled Fusion. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at doi:10.1088/0741-3335/58/10/105003",
year = "2016",
month = oct,
doi = "10.1088/0741-3335/58/10/105003",
language = "English",
volume = "58",
journal = "Plasma Physics and Controlled Fusion",
issn = "0741-3335",
publisher = "IOP Publishing Ltd",
number = "10",

}

RIS

TY - JOUR

T1 - Characterization of electrons and x-rays produced using chirped laser pulses in a laser wakefield accelerator

AU - Zhao, T. Z.

AU - Behm, K.

AU - He, Z-H

AU - Maksimchuk, A.

AU - Nees, J. A.

AU - Yanovsky, V.

AU - Thomas, A. G. R.

AU - Krushelnick, K.

N1 - This is an author-created, un-copyedited version of an article accepted for publication/published in Plasma Physics and Controlled Fusion. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at doi:10.1088/0741-3335/58/10/105003

PY - 2016/10

Y1 - 2016/10

N2 - The electron injection process into a plasma-based laser wakefield accelerator can be influenced by modifying the parameters of the driver pulse. We present an experimental study on the combined effect of the laser pulse duration, pulse shape, and frequency chirp on the electron injection and acceleration process and the associated radiation emission for two different gas types-a 97.5% He and 2.5% N-2 mixture and pure He. In general, the shortest pulse duration with minimal frequency chirp produced the highest energy electrons and the most charge. Pulses on the positive chirp side sustained electron injection and produced higher charge, but lower peak energy electrons, compared with negatively chirped pulses. A similar trend was observed for the radiant energy. The relationship between the radiant energy and the electron charge remained linear over a threefold change in the electron density and was independent of the drive pulse characteristics. X-ray spectra showed that ionization injection of electrons into the wakefield generally produced more photons than self-injection for all pulse durations/frequency chirp and had less of a spread in the number of photons around the peak x-ray energy.

AB - The electron injection process into a plasma-based laser wakefield accelerator can be influenced by modifying the parameters of the driver pulse. We present an experimental study on the combined effect of the laser pulse duration, pulse shape, and frequency chirp on the electron injection and acceleration process and the associated radiation emission for two different gas types-a 97.5% He and 2.5% N-2 mixture and pure He. In general, the shortest pulse duration with minimal frequency chirp produced the highest energy electrons and the most charge. Pulses on the positive chirp side sustained electron injection and produced higher charge, but lower peak energy electrons, compared with negatively chirped pulses. A similar trend was observed for the radiant energy. The relationship between the radiant energy and the electron charge remained linear over a threefold change in the electron density and was independent of the drive pulse characteristics. X-ray spectra showed that ionization injection of electrons into the wakefield generally produced more photons than self-injection for all pulse durations/frequency chirp and had less of a spread in the number of photons around the peak x-ray energy.

KW - laser wakefield accelerator

KW - electrons

KW - x-rays

KW - chirped laser pulses

KW - BEAMS

U2 - 10.1088/0741-3335/58/10/105003

DO - 10.1088/0741-3335/58/10/105003

M3 - Journal article

VL - 58

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

SN - 0741-3335

IS - 10

M1 - 105003

ER -