Efficient GeV ion generation by ultraintense circularly polarized laser pulse

Zhang, Xiaomei; Shen, Baifei; Li, Xuemei; Zhang, Jin; Wang, Fengchao; Wen, Meng

doi:10.1063/1.2817087

Cited by 128 publications

(94 citation statements)

References 24 publications

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“…[11,12] are devoted to extending its range of operation towards lower electromagnetic wave intensities. The interaction of a high intensity laser pulse with extended plasmas in the RPDA (or 'Laser Piston') regime has been simulated in [13]. In Refs.…”

Section: Introductionmentioning

confidence: 99%

Unlimited energy gain in the laser-driven radiation pressure dominant acceleration of ions

Bulanov¹,

Echkina

Esirkepov³

et al. 2010

Physics of Plasmas

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The energy of the ions accelerated by an intense electromagnetic wave in the radiation pressure dominated regime can be greatly enhanced due to a transverse expansion of a thin target. The expansion decreases the number of accelerated ions in the irradiated region increasing the energy and the longitudinal velocity of remaining ions. In the relativistic limit, the ions become phase-locked with respect to the electromagnetic wave resulting in the unlimited ion energy gain. This effect and the use of optimal laser pulse shape provide a new approach for great enhancing the energy of laser accelerated ions.2

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Section: Introductionmentioning

confidence: 99%

Unlimited energy gain in the laser-driven radiation pressure dominant acceleration of ions

Bulanov¹,

Echkina

Esirkepov³

et al. 2010

Physics of Plasmas

View full text Add to dashboard Cite

show abstract

“…High-energy ions accelerated by such intense laser interacting with the solid target can be prospectively applied in fast ignition for inertial confinement fusion [3,4], medical therapy [5,6], and proton imaging [7], among others. Radiation pressure acceleration (RPA) using circularly polarized (CP) laser pulses provides a promising way to obtain a high-energy ion beam with monoenergetic spectrum in a much more efficient manner, compared with target normal sheath acceleration [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. Yan et al [12] proposed the phase-stable-acceleration (PSA) mechanism in the RPA regime [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] to synchronously accelerate and bunch ions within skin depth of the laser pulse to get a monoenergetic ion beam in the longitudinal direction.…”

Section: Introductionmentioning

confidence: 99%

Dynamic study of a compressed electron layer during the hole-boring stage in a sharp-front laser interaction region

et al. 2012

Phys. Rev. ST Accel. Beams

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This study investigates the dynamics of a compressed electron layer (CEL) when a circularly polarized laser pulse with a sharp front irradiates a high-density foil. A time-dependent model for CEL motion during the hole-boring stage is proposed to describe details of the interaction for any shape of laser pulse. The opacity case, where the laser pulse is totally reflected, is investigated using this model. The results obtained are consistent with the results from particle-in-cell (PIC) simulations. A relaxation distance determined by the laser-front steepness is necessary to build a stable CEL state before ions rejoin into the CEL. For the transparent case, the laser-front steepness is important for the formation of the stable CEL state at the back surface of the target. Considering the motion of ions, both the CEL and ion dynamics are important to rebalance the laser pressure and electrostatic charge-separation force as the hole-boring stage changes to the light-sail stage.

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“…Because of the absence of an oscillatory component in the ponderomotive force of a CP laser, electron heating is suppressed, so that a highly monoenergetic ion bunch can be obtained. 23,24 However, higher-dimensional simulations showed that the RPA scheme is susceptible to transverse Weibel-and Rayleigh-Taylor-like instabilities. [25][26][27] As a result, the final ion energy spectrum exhibits a sharp cutoff in the otherwise quasithermal profile.…”

Section: Introductionmentioning

confidence: 99%

High-energy monoenergetic protons from multistaged acceleration of thin double-layer target by circularly polarized laser

Zhang

Sheng

et al. 2011

Physics of Plasmas

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Multistaged acceleration of solid-density thin foils by ultraintense circularly polarized laser pulse is investigated. A stable radiation pressure acceleration (RPA) stage is first established. Higher dimensional effects such as transverse instabilities and enhanced electron heating then gradually make the initially opaque foil transparent to the laser light. Accordingly, the dominant acceleration mechanism changes smoothly from RPA to target normal sheath acceleration (TNSA). The transition can therefore enhance the maximum energy of the accelerated ions but broaden their energy spectrum. For a double-layer target, however, the light ions (protons) in the backlayer can be efficiently accelerated in the RPA and TNSA regimes nearly monoenergetically. Two-dimensional particle-in-cell simulations show that with this scheme a circularly polarized laser pulse of peak intensity 3.9×1022 W/cm2 can produce a collimated proton bunch that persists for many Rayleigh lengths and its peak energy can reach 4.2 GeV with FWHM of 200 MeV.

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Efficient GeV ion generation by ultraintense circularly polarized laser pulse

Cited by 128 publications

References 24 publications

Unlimited energy gain in the laser-driven radiation pressure dominant acceleration of ions

Unlimited energy gain in the laser-driven radiation pressure dominant acceleration of ions

Dynamic study of a compressed electron layer during the hole-boring stage in a sharp-front laser interaction region

High-energy monoenergetic protons from multistaged acceleration of thin double-layer target by circularly polarized laser

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