Angle-dependent modulated spectral peaks of proton beams generated in ultrashort intense laser-solid interactions

L. N. Su; Z. D. Hu; Y. Zheng; M. Liu; Y. T. Li; W. M. Wang; Z. M. Sheng; X. H. Yuan; M. H. Xu; Z. W. Shen; H. T. Fan; L. M. Chen; X. Lu; J. L. Ma; X. Wang; Z. H. Wang; Z. Y. Wei; J. Zhang

doi:10.1063/1.4896338

Angle-dependent modulated spectral peaks of proton beams generated in ultrashort intense laser-solid interactions

L. N. Su^*, Z. D. Hu, Y. Zheng, M. Liu, Y. T. Li, W. M. Wang, Z. M. Sheng, X. H. Yuan, M. H. Xu, Z. W. Shen, H. T. Fan, L. M. Chen, X. Lu, J. L. Ma, X. Wang, Z. H. Wang, Z. Y. Wei, J. Zhang

^*Corresponding author for this work

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

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Abstract

Proton acceleration from 4μm thick aluminum foils irradiated by 30-TW Ti:sapphire laser pulses is investigated using an angle-resolved proton energy spectrometer. We find that a modulated spectral peak at ∼0.82MeV is presented at 2.5° off the target normal direction. The divergence angle of the modulated zone is 3.8°. Two-dimensional particle-in-cell simulations reveal that self-generated toroidal magnetic field at the rear surface of the target foil is responsible for the modulated spectral feature. The field deflects the low energy protons, resulting in the modulated energy spectrum with certain peaks.

Original language	English
Article number	093111
Number of pages	6
Journal	Physics of Plasmas
Volume	21
Issue number	9
DOIs	https://doi.org/10.1063/1.4896338
Publication status	Published - 24 Sept 2014

Keywords

spectral peak
intense laser
proton beams

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10.1063/1.4896338

Su-etal-POP-2014-Angle-dependent-modulated-spectral-peaks-of-proton-beamsAccepted author manuscript, 1.09 MB

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Su, L. N., Hu, Z. D., Zheng, Y., Liu, M., Li, Y. T., Wang, W. M., Sheng, Z. M., Yuan, X. H., Xu, M. H., Shen, Z. W., Fan, H. T., Chen, L. M., Lu, X., Ma, J. L., Wang, X., Wang, Z. H., Wei, Z. Y., & Zhang, J. (2014). Angle-dependent modulated spectral peaks of proton beams generated in ultrashort intense laser-solid interactions. Physics of Plasmas, 21(9), Article 093111. https://doi.org/10.1063/1.4896338

@article{616cc2136562409e98b4dbc5f2ad3c40,

title = "Angle-dependent modulated spectral peaks of proton beams generated in ultrashort intense laser-solid interactions",

abstract = "Proton acceleration from 4μm thick aluminum foils irradiated by 30-TW Ti:sapphire laser pulses is investigated using an angle-resolved proton energy spectrometer. We find that a modulated spectral peak at ∼0.82MeV is presented at 2.5° off the target normal direction. The divergence angle of the modulated zone is 3.8°. Two-dimensional particle-in-cell simulations reveal that self-generated toroidal magnetic field at the rear surface of the target foil is responsible for the modulated spectral feature. The field deflects the low energy protons, resulting in the modulated energy spectrum with certain peaks.",

keywords = "spectral peak, intense laser, proton beams",

author = "Su, {L. N.} and Hu, {Z. D.} and Y. Zheng and M. Liu and Li, {Y. T.} and Wang, {W. M.} and Sheng, {Z. M.} and Yuan, {X. H.} and Xu, {M. H.} and Shen, {Z. W.} and Fan, {H. T.} and Chen, {L. M.} and X. Lu and Ma, {J. L.} and X. Wang and Wang, {Z. H.} and Wei, {Z. Y.} and J. Zhang",

note = "Date of Acceptance: 09/09/2014",

year = "2014",

month = sep,

day = "24",

doi = "10.1063/1.4896338",

language = "English",

volume = "21",

journal = "Physics of Plasmas",

issn = "1070-664X",

number = "9",

}

TY - JOUR

T1 - Angle-dependent modulated spectral peaks of proton beams generated in ultrashort intense laser-solid interactions

AU - Su, L. N.

AU - Hu, Z. D.

AU - Zheng, Y.

AU - Liu, M.

AU - Li, Y. T.

AU - Wang, W. M.

AU - Sheng, Z. M.

AU - Yuan, X. H.

AU - Xu, M. H.

AU - Shen, Z. W.

AU - Fan, H. T.

AU - Chen, L. M.

AU - Lu, X.

AU - Ma, J. L.

AU - Wang, X.

AU - Wang, Z. H.

AU - Wei, Z. Y.

AU - Zhang, J.

N1 - Date of Acceptance: 09/09/2014

PY - 2014/9/24

Y1 - 2014/9/24

N2 - Proton acceleration from 4μm thick aluminum foils irradiated by 30-TW Ti:sapphire laser pulses is investigated using an angle-resolved proton energy spectrometer. We find that a modulated spectral peak at ∼0.82MeV is presented at 2.5° off the target normal direction. The divergence angle of the modulated zone is 3.8°. Two-dimensional particle-in-cell simulations reveal that self-generated toroidal magnetic field at the rear surface of the target foil is responsible for the modulated spectral feature. The field deflects the low energy protons, resulting in the modulated energy spectrum with certain peaks.

AB - Proton acceleration from 4μm thick aluminum foils irradiated by 30-TW Ti:sapphire laser pulses is investigated using an angle-resolved proton energy spectrometer. We find that a modulated spectral peak at ∼0.82MeV is presented at 2.5° off the target normal direction. The divergence angle of the modulated zone is 3.8°. Two-dimensional particle-in-cell simulations reveal that self-generated toroidal magnetic field at the rear surface of the target foil is responsible for the modulated spectral feature. The field deflects the low energy protons, resulting in the modulated energy spectrum with certain peaks.

KW - spectral peak

KW - intense laser

KW - proton beams

UR - http://www.scopus.com/inward/record.url?scp=84908347624&partnerID=8YFLogxK

U2 - 10.1063/1.4896338

DO - 10.1063/1.4896338

M3 - Article

AN - SCOPUS:84908347624

SN - 1070-664X

VL - 21

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 9

M1 - 093111

ER -

Angle-dependent modulated spectral peaks of proton beams generated in ultrashort intense laser-solid interactions

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