Enhancement of laser intensity and proton acceleration using micro-tube plasma lens targets

@article{Snyder2016EnhancementOL,
  title={Enhancement of laser intensity and proton acceleration using micro-tube plasma lens targets},
  author={J. Snyder and Liangliang Ji and Kramer U Akli},
  journal={Physics of Plasmas},
  year={2016},
  volume={23},
  pages={123122}
}
A hollow, cylindrical, micron-scale structure is proposed to enhance and manipulate the laser plasma interaction. It is shown through 3-D particle-in-cell simulations that the incident laser pulse intensity is enhanced within the tube. A detailed study of the intensification optimizes the tube dimensions and provides a characterization of the in-tube intensity. By coupling the micro-tube plasma lens to a traditional flat interface, we show an increase in on-target intensity. We detail proton… 

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References

SHOWING 1-10 OF 39 REFERENCES

Enhanced target normal sheath acceleration of protons from intense laser interaction with a cone-tube target

Laser driven proton acceleration is proposed to be greatly enhanced by using a cone-tube target, which can be easily manufactured by current 3D-print technology. It is observed that energetic

Towards manipulating relativistic laser pulses with micro-tube plasma lenses

It is demonstrated, via simulations, that usable intensities ≥1023 Wcm−2 could be achieved with current tabletop lasers coupled to micro-engineered plasma lenses and it is shown that these plasma optical elements act as a lens to focus laser light.

Laser light and hot electron micro focusing using a conical target

The laser light propagation inside the conical target had been studied by three-dimensional particle-in-cell simulations. It is found that the laser light is optically guided inside the conical

Enhanced relativistic laser–plasma coupling utilizing laser-induced micromodified target

The interaction of slighly relativistic femtosecond laser radiation with microstructured Si targets was studied. The microstructuring was performed by nanosecond pulse laser ablation with additional

Effect of inside diameter of tip on proton beam produced by intense laser pulse on double-layer cone targets

The laser-driven acceleration of proton beams from a double-layer cone target, comprised of a cone shaped high-Z material target with a low density proton layer, is investigated via two-dimensional

Increased laser-accelerated proton energies via direct laser-light-pressure acceleration of electrons in microcone targetsa)

We present experimental results showing a laser-accelerated proton beam maximum energy cutoff of 67.5 MeV, with more than 5 × 106 protons per MeV at that energy, using flat-top hollow microcone

High-contrast laser acceleration of relativistic electrons in solid cone-wire targets.

Evidence for the existence of an optimal plasma scale-length is presented and estimated to be from 1 to 5μm and the simulations indicate that 32%±8%(6.5%±2%) of the laser energy is coupled into electrons of all energies reaching the inner cone tip and that this could increase to 35% (9%).

Generation of high-energy-density ion bunches by ultraintense laser-cone-target interaction

A scheme in which carbon ion bunches are accelerated to a high energy and density by a laser pulse (∼1021 W/cm2) irradiating cone targets is proposed and investigated using particle-in-cell

Bright X-Ray Source from a Laser-Driven Microplasma Waveguide.

It is demonstrated, for the first time, that when coupled with a readily available 1.8 J laser, a microplasma waveguide (MPW) may serve as a novel compact x-ray source.

Control of target-normal-sheath-accelerated protons from a guiding cone

It is demonstrated through particle-in-cell simulations that target-normal-sheath-accelerated protons can be well controlled by using a guiding cone. Compared to a conventional planar target, both