Ion cascade acceleration from the interaction of a relativistic femtosecond laser pulse with a narrow thin target

He, Feng; Xu, Han; Tian, Youwei; Yu, Wei; Lu, Peixiang; Li, Ruxin

doi:10.1063/1.2219430

Cited by 11 publications

(2 citation statements)

References 26 publications

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“…One may also think of utilizing an ultrasmall foil with spatial dimensions smaller than the laser focal spot. However, fast electrons would be efficiently produced on the borders of such a foil and the ion acceleration process will be significantly affected [26]. Nevertheless, as the above constraints come from the motion of the foil, the limiting factor is the velocity of ions, not their energy.…”

Section: E Two-dimensional Simulationsmentioning

confidence: 99%

Monoenergetic ion beams from ultrathin foils irradiated by ultrahigh-contrast circularly polarized laser pulses

Klimo

Pšikal

Limpouch

et al. 2008

Phys. Rev. ST Accel. Beams

275

225

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Acceleration of ions from ultrathin foils irradiated by intense circularly polarized laser pulses is investigated using one-and two-dimensional particle simulations. A circularly polarized laser wave heats the electrons much less efficiently than the wave of linear polarization and the ion acceleration process takes place on the front side of the foil. The ballistic evolution of the foil becomes important after all ions contained in the foil have been accelerated. In the ongoing acceleration process, the whole foil is accelerated as a dense compact bunch of quasineutral plasma implying that the energy spectrum of ions is quasimonoenergetic. Because of the ballistic evolution, the velocity spread of an accelerated ion beam is conserved while the average velocity of ions may be further increased. This offers the possibility to control the parameters of the accelerated ion beam. The ion acceleration process is described by the momentum transfer from the laser beam to the foil and it might be fairly efficient in terms of the energy transferred to the heavy ions even if the foil contains a comparable number of light ions or some surface contaminants. Two-dimensional simulations confirm the formation of the quasimonoenergetic spectrum of ions and relatively good collimation of the ion bunch, however the spatial distribution of the laser intensity poses constraints on the maximum velocity of the ion beam. The present ion acceleration mechanism might be suitable for obtaining a dense high energy beam of quasimonoenergetic heavy ions which can be subsequently applied in nuclear physics experiments. Our simulations are complemented by a simple theoretical model which provides the insights on how to control the energy, number, and energy spread of accelerated ions.

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Section: E Two-dimensional Simulationsmentioning

confidence: 99%

Monoenergetic ion beams from ultrathin foils irradiated by ultrahigh-contrast circularly polarized laser pulses

Klimo

Pšikal

Limpouch

et al. 2008

Phys. Rev. ST Accel. Beams

275

225

View full text Add to dashboard Cite

show abstract

“…They found that the protons initially located in the center of the target, which were first accelerated by a shock and then by the TNSA, were the most energetic. He et al [20] studied ion cascade acceleration from the interaction of a circularly polarized (CP) laser pulse with a 1 µm thickness target without any structure. The ions from the front surface were accelerated by two steps to high energies, however the accelerated protons were not monoenergetic in their simulations.…”

mentioning

confidence: 99%

Proton Acceleration with Nano-Scale Micro-Structured Target by Circularly Polarized Laser Pulse

Zhang¹,

Shen²,

Zhang³

et al. 2009

Chinese Phys. Lett.

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Two dimensional particle-in-cell simulations are taken to study the interaction of a circularly polarized laser pulse with a nano-scale micro-structured target. The protons which are doped in the rear side of the target experience the electrostatic fields caused by both the radiation pressure driven shock and the target normal sheath at the rear side of the target. A quasimonoenergetic proton bunch with central energy of about 11 MeV and energy spread of Δ𝜀/𝜀 about 0.18 is achieved by using a 3.45 × 10 19 W/cm 2 , 66 fs laser pulse. A comparison with the case of linearly polarized laser pulse and the same target condition is considered.

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Steady state ion acceleration by a circularly polarized laser pulse

et al. 2007

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Ion cascade acceleration from the interaction of a relativistic femtosecond laser pulse with a narrow thin target

Cited by 11 publications

References 26 publications

Monoenergetic ion beams from ultrathin foils irradiated by ultrahigh-contrast circularly polarized laser pulses

Monoenergetic ion beams from ultrathin foils irradiated by ultrahigh-contrast circularly polarized laser pulses

Proton Acceleration with Nano-Scale Micro-Structured Target by Circularly Polarized Laser Pulse

Steady state ion acceleration by a circularly polarized laser pulse

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