Generating high-current monoenergetic proton beams by a circularly polarized laser pulse in the phase-stable acceleration regime

X. Q. Yan, C. Lin, Zheng-Ming Sheng, Z. Y. Guo, B. C. Liu, J. X. Fang, J. E. Chen

Research output: Contribution to journalArticle

338 Citations (Scopus)

Abstract

A new ion acceleration method, namely, phase-stable acceleration, usingcircularly-polarized laser pulses is proposed. When the initial target density n0 and thickness D satisfy aL∼(n0/nc)D/λL and D>ls with aL, λL, ls, and nc the normalized laser amplitude, the laser wavelength invacuum, the plasma skin depth, and the critical density of the incident laserpulse, respectively, a quasiequilibrium for the electrons is established bythe light pressure and the space charge electrostatic field at the interactingfront of the laser pulse. The ions within the skin depth of the laser pulseare synchronously accelerated and bunched by the electrostatic field, andthereby a high-intensity monoenergetic proton beam can be generated. The protondynamics is investigated analytically and the results are verified by one-and two-dimensional particle-in-cell simulations.
Original languageEnglish
Article number135003
Number of pages4
JournalPhysical Review Letters
Volume100
Issue number13
DOIs
Publication statusPublished - 3 Apr 2008

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proton beams
high current
pulses
lasers
illuminance
electric fields
space charge
ions
cells
wavelengths
electrons
simulation

Keywords

  • monoenergetic proton beams
  • laser pulse

Cite this

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title = "Generating high-current monoenergetic proton beams by a circularly polarized laser pulse in the phase-stable acceleration regime",
abstract = "A new ion acceleration method, namely, phase-stable acceleration, usingcircularly-polarized laser pulses is proposed. When the initial target density n0 and thickness D satisfy aL∼(n0/nc)D/λL and D>ls with aL, λL, ls, and nc the normalized laser amplitude, the laser wavelength invacuum, the plasma skin depth, and the critical density of the incident laserpulse, respectively, a quasiequilibrium for the electrons is established bythe light pressure and the space charge electrostatic field at the interactingfront of the laser pulse. The ions within the skin depth of the laser pulseare synchronously accelerated and bunched by the electrostatic field, andthereby a high-intensity monoenergetic proton beam can be generated. The protondynamics is investigated analytically and the results are verified by one-and two-dimensional particle-in-cell simulations.",
keywords = "monoenergetic proton beams , laser pulse",
author = "Yan, {X. Q.} and C. Lin and Zheng-Ming Sheng and Guo, {Z. Y.} and Liu, {B. C.} and Fang, {J. X.} and Chen, {J. E.}",
year = "2008",
month = "4",
day = "3",
doi = "10.1103/PhysRevLett.100.135003",
language = "English",
volume = "100",
journal = "Physical Review Letters",
issn = "0031-9007",
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Generating high-current monoenergetic proton beams by a circularly polarized laser pulse in the phase-stable acceleration regime. / Yan, X. Q.; Lin, C.; Sheng, Zheng-Ming; Guo, Z. Y.; Liu, B. C. ; Fang, J. X.; Chen, J. E. .

In: Physical Review Letters, Vol. 100, No. 13, 135003, 03.04.2008.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Generating high-current monoenergetic proton beams by a circularly polarized laser pulse in the phase-stable acceleration regime

AU - Yan, X. Q.

AU - Lin, C.

AU - Sheng, Zheng-Ming

AU - Guo, Z. Y.

AU - Liu, B. C.

AU - Fang, J. X.

AU - Chen, J. E.

PY - 2008/4/3

Y1 - 2008/4/3

N2 - A new ion acceleration method, namely, phase-stable acceleration, usingcircularly-polarized laser pulses is proposed. When the initial target density n0 and thickness D satisfy aL∼(n0/nc)D/λL and D>ls with aL, λL, ls, and nc the normalized laser amplitude, the laser wavelength invacuum, the plasma skin depth, and the critical density of the incident laserpulse, respectively, a quasiequilibrium for the electrons is established bythe light pressure and the space charge electrostatic field at the interactingfront of the laser pulse. The ions within the skin depth of the laser pulseare synchronously accelerated and bunched by the electrostatic field, andthereby a high-intensity monoenergetic proton beam can be generated. The protondynamics is investigated analytically and the results are verified by one-and two-dimensional particle-in-cell simulations.

AB - A new ion acceleration method, namely, phase-stable acceleration, usingcircularly-polarized laser pulses is proposed. When the initial target density n0 and thickness D satisfy aL∼(n0/nc)D/λL and D>ls with aL, λL, ls, and nc the normalized laser amplitude, the laser wavelength invacuum, the plasma skin depth, and the critical density of the incident laserpulse, respectively, a quasiequilibrium for the electrons is established bythe light pressure and the space charge electrostatic field at the interactingfront of the laser pulse. The ions within the skin depth of the laser pulseare synchronously accelerated and bunched by the electrostatic field, andthereby a high-intensity monoenergetic proton beam can be generated. The protondynamics is investigated analytically and the results are verified by one-and two-dimensional particle-in-cell simulations.

KW - monoenergetic proton beams

KW - laser pulse

U2 - 10.1103/PhysRevLett.100.135003

DO - 10.1103/PhysRevLett.100.135003

M3 - Article

VL - 100

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 13

M1 - 135003

ER -