Hollow Microspheres as Targets for Staged Laser-Driven

@inproceedings{Burza2011HollowMA,
  title={Hollow Microspheres as Targets for Staged Laser-Driven},
  author={Matthias Burza and Arkady A. Gonoskov and Guillaume Genoud and Anders Persson and Krister Svensson and Mark N. Quinn and Paul McKenna and Mattias Marklund and C.-G. Wahlstrom},
  year={2011}
}
A coated hollow core microsphere is introduced as novel target in ultra intense laser matter interaction experiments. In particular, it fa cilitates staged laser driven proton acceleration by combining conventional target normal sheath acceleration (TNSA), power recycling of hot laterally spreading electrons and staging in a very simple and cheap target geometry. During TNSA of protons from one area of the sphere surface, laterally spreading hot electrons forms a charge wave. Due to the… 
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References

SHOWING 1-10 OF 40 REFERENCES
Laser-plasma acceleration of quasi-monoenergetic protons from microstructured targets
TLDR
Reliable and reproducible laser-accelerated ion beams were achieved by intense laser irradiation of solid microstructured targets and Scalability studies show that, owing to their compact size and reasonable cost, such table-top laser systems with high repetition rates could contribute to the development of new generations of particle injectors that may be suitable for medical proton therapy.
High-intensity laser-driven proton acceleration: influence of pulse contrast
TLDR
It is demonstrated that a window of amplified spontaneous emission (ASE) conditions exist, for which the direction of proton emission is sensitive to the ASE-pedestal preceding the peak of the laser pulse, and that by significantly improving the temporal contrast, using plasma mirrors, efficient proton acceleration is observed from target foils with thickness less than 50 nm.
Hot electrons transverse refluxing in ultraintense laser-solid interactions.
TLDR
When transverse refluxing takes places within the acceleration time of associated ions, the coupling of ultraintense lasers with solid foils with limited transverse extent is analyzed, resulting in increased maximum proton energies, increased laser-to-ion conversion efficiency, and reduced divergence.
Laser accelerated ions in ICF research prospects and experiments
The acceleration of ions by ultra-intense lasers has attracted great attention due to the unique properties and the unmatched intensities of the ion beams. In the early days the prospects for…
Directional laser-driven ion acceleration from microspheres.
TLDR
The observation of directional ion acceleration of irradiated spherical targets through proton imaging makes spherical targets extremely attractive candidates for high quality, high repetition rate sources of laser accelerated particles.
Enhanced proton beams from ultrathin targets driven by high contrast laser pulses
The generation of proton beams from ultrathin targets, down to 20 nm in thickness, driven with ultrahigh contrast laser pulses is explored. the conversion efficiency from laser energy into protons…
Lateral hot electron transport and ion acceleration in femtosecond laser pulse interaction with thin foils
In this paper, the lateral electron transport in a thin foil, limited in transverse sizes, is studied by numerical PIC simulations for two linear polarizations (p, s) of femtosecond laser pulse…
Energetic ions generated by laser pulses: A detailed study on target properties
We present the results of a detailed study on the acceleration of intense ion beams by relativistic laser plasmas. The experiments were performed at the 100 TW laser at the Laboratoire pour…
Dynamic control of laser-produced proton beams.
TLDR
The peak focusing power and its temporal variation are shown to depend on the target characteristics, allowing for the collimation of the inherently highly divergent beam and the design of achromatic electrostatic lenses.
Ultrafast Laser-Driven Microlens to Focus and Energy-Select Mega-Electron Volt Protons
TLDR
This technique addresses current drawbacks of laser-accelerated proton beams, such as their broad spectrum and divergence at the source, and allows selection of a desired range out of the spectrum of the polyenergetic proton beam.
...
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