Theory and simulation of ion acceleration with circularly polarized laser pulses

Macchi, Andrea; Лисейкина, Т. В.; Tuveri, Sara; Veghini, Silvia

doi:10.1016/j.crhy.2009.03.002

Cited by 19 publications

(9 citation statements)

References 30 publications

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“…It is worth noting that CSA is different from hole-boring (HB) where ions are reflected by the charge-separation field that is built up due to purely piling-up of plasma electron density by the laser ponderomotive force (radiation pressure), where the plasma keeps opaque to the laser and the plasma temperature is rather low. As a result, both the HB velocity ( = v I mnc i i hb 3 ) and the reflected ion energy (ò i ∼I/m i n i c 3 ) are mainly determined by the laser intensity I (divided by the plasma density), where the plasma temperature has negligible contribution, and almost all ions are reflected to offset the charge-separation [14,[31][32][33][34]. However, CSA is based on the formation of an electrostatic shock that is typically associated with the excitation of ion acoustic waves in plasmas with cold ions and high electron temperatures, where the plasma is eventually transparent to the laser and an efficient plasma heating is the key factor.…”

Section: Introductionmentioning

confidence: 99%

High-flux high-energy ion beam production from stable collisionless shock acceleration by intense petawatt-picosecond laser pulses

Qiao

Shen

et al. 2019

New J. Phys.

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A scheme to achieve stable collisionless shock acceleration (CSA) of ions from a near-critical plasma by intense petawatt-picosecond laser pulses is proposed, where the plasma is confined in a high-Z solid tube. The application of the tube, on the one hand, restrains the plasma from transverse thermal expansion, helping to sustain sufficient density steepening required for shock formation and maintenance; on the other hand, due to the induced sheath field along its wall, pinches hot electrons for recirculation near laser axis, aiding to reach efficient plasma heating that is crucial to have a strong shock velocity for ion reflection. Consequently, stable ion CSA can be maintained for picosecond time scales, resulting in production of high-flux high-energy ion beams. Two-dimensional PIC simulations show that proton beams with narrow energy spread between 50 and 80 MeV and high flux with particle number about 10 12 are produced by a laser pulse at intensity 8.8×10 19 W cm −2 and duration 1 ps. By extending the pulse duration to 3 ps, over 100 MeV high-flux proton beams are obtained.

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Section: Introductionmentioning

confidence: 99%

High-flux high-energy ion beam production from stable collisionless shock acceleration by intense petawatt-picosecond laser pulses

Qiao

Shen

et al. 2019

New J. Phys.

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“…A more detailed analysis shows that electron heating is quenched when the parameter exceeds some threshold value, seeMacchi et al (2009b) andRykovanov et al (2008).…”

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confidence: 99%

Ion acceleration by superintense laser-plasma interaction

2013

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Ion acceleration driven by superintense laser pulses is attracting an impressive and steadily increasing\ud effort. Motivations can be found in the applicative potential and in the perspective to investigate novel regimes as available laser intensitieswill be increasing. Experiments have demonstrated, over a wide range\ud of laser and target parameters, the generation of multi-MeV proton and ion beams with unique properties\ud suchas ultrashort duration, high brilliance, and low emittance. An overview is given of the state of the art of\ud ion acceleration by laser pulses aswell as an outlook on its future development and perspectives.The main\ud features observed in the experiments, the observed scaling with laser and plasma parameters, and the main\ud models used both to interpret experimental data and to suggest new research directions are described

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“…At mechanical equilibrium, i.e. in the so-called regime of ponderomotive acceleration 48 , we have . Consequently, the equation of motion for radially accelerated ions can be recast as 49 : where A and Z are the ion mass number and the atomic number, respectively.…”

Section: Pic Simulation Results and Analytical Estimatesmentioning

confidence: 99%

“…The ion density spike splits up rapidly (see Fig. 6 b) and a short bunch of fast ions is generated 48 . The onset of hydrodynamical breaking causes the formation of an ambipolar sheath field with a sharp gradient, around the breaking point (i.e.…”

Section: Pic Simulation Results and Analytical Estimatesmentioning

confidence: 99%

Multiscale study of high energy attosecond pulse interaction with matter and application to proton–Boron fusion

Ribeyre

Capdessus

d’Humières

et al. 2022

Sci Rep

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For several decades, the interest of the scientific community in aneutronic fusion reactions such as proton–Boron fusion has grown because of potential applications in different fields. Recently, many scientific teams in the world have worked experimentally on the possibility to trigger proton–Boron fusion using intense lasers demonstrating an important renewal of interest of this field. It is now possible to generate ultra-short high intensity laser pulses at high repetition rate. These pulses also have unique properties that can be leveraged to produce proton–Boron fusion reactions. In this article, we investigate the interaction of a high energy attosecond pulse with a solid proton–Boron target and the associated ion acceleration supported by numerical simulations. We demonstrate the efficiency of single-cycle attosecond pulses in comparison to multi-cycle attosecond pulses in ion acceleration and magnetic field generation. Using these results we also propose a path to proton–Boron fusion using high energy attosecond pulses.

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Theory and simulation of ion acceleration with circularly polarized laser pulses

Cited by 19 publications

References 30 publications

High-flux high-energy ion beam production from stable collisionless shock acceleration by intense petawatt-picosecond laser pulses

High-flux high-energy ion beam production from stable collisionless shock acceleration by intense petawatt-picosecond laser pulses

Ion acceleration by superintense laser-plasma interaction

Multiscale study of high energy attosecond pulse interaction with matter and application to proton–Boron fusion

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