Multidimensional effects on proton acceleration using high-power intense laser pulses

Xiao, Kanglin; Zhou, C. T.; Jiang, Ke; Yang, Yujia; Li, R.; Zhang, H.; Qiao, B.; Huang, T. W.; Cao, J. M.; Yu, M. Y.; Ruan, Shuangchen; He, X. T.

doi:10.1063/1.5003619

Cited by 24 publications

(10 citation statements)

References 48 publications

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“…Recently, in [29] by particle-in-cell simulations of target normal sheath acceleration of protons was obtained a proton spectrum (Figure 2e from reference) similar with that one from Figure 10. Optical images of the proton tracks identified on both front sides of the post-etched CR-39 detectors can be observed in Figure 8.…”

Section: Analysis Of the Laser Driven Proton Tracks In Cr-39 Detectormentioning

confidence: 55%

Advances in Spectral Distribution Assessment of Laser Accelerated Protons using Multilayer CR-39 Detectors

et al. 2019

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We show that a spectral distribution of laser-accelerated protons can be extracted by analyzing the proton track diameters observed on the front side of a second CR-39 detector arranged in a stack. The correspondence between the proton track diameter and the incident energy on the second detector is established by knowing that protons with energies only higher than 10.5 MeV can fully deposit their energy in the second CR-39 detector. The correlation between the laser-accelerated proton track diameters observed on the front side of the second CR-39 detector and the proton incident energy on the detector stack is also presented. By calculating the proton number stopped in the CR-39 stack, we find out that its dependence on the proton energy in the 1–15 MeV range presents some discontinuities at energies higher than 9 MeV. Thus, we build a calibration curve of the track diameter as a function of the proton incident energy within the 1–9 MeV range, and we infer the associated analytical function as the calculations performed indicate best results for proton spectra within the 1–9 MeV range. The calibration curve is used as a tool to ascertain the pits identified on the surfaces of both CR-39 detectors to proton tracks. The proton tracks spatial distribution analyzed by optical and atomic force microscopy is correlated with the peculiarity of the used targets.

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Section: Analysis Of the Laser Driven Proton Tracks In Cr-39 Detectormentioning

confidence: 55%

Advances in Spectral Distribution Assessment of Laser Accelerated Protons using Multilayer CR-39 Detectors

et al. 2019

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“…Since the number and cutoff energy of TNSA protons are often overestimated in 2D simulations [7,51], we have also carried out full 3D simulations of the scheme. The 3D simulation result for the electron density at t = 473 fs is shown in figure 6(a).…”

Section: D Simulation Resultsmentioning

confidence: 99%

Proton acceleration from picosecond-laser interaction with a hydrocarbon target

Yang

Huang

Jiang

et al. 2023

Plasma Sci. Technol.

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As intense picosecond laser pulse irradiates a hydrocarbon target, the protons therein can be accelerated by the radiation pressure as well as the sheath field behind the target. We investigate the effect of the laser and hydrocarbon target parameters on proton acceleration with two/three-dimensional particle-in-cell simulations. It is found that the resulting two-ion species plasma can generate a multiple peaked charge-separation field for accelerating the protons. In particular, smaller carbon-tohydrogen ratio, as well as thinner and/or lower-density of the target, leads to larger sheath field and thus proton beams with larger cutoff energy and smoother energy spectrum. These results may be useful for achieving high-flux quasi-monoenergetic proton beams by properly designing the hydrocarbon target.

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“…In this section, we will briefly discuss the possible uncertainties resulting from the simplifications adopted in the laser-plasma interaction model used in our work, in particular resulting from: (a) the two-dimensionality of the model, (b) ignoring energy losses associated with bremsstrahlung radiation and (c) using the Sokolov model for simulation of SR emission. (a) It is well known that the results of numerical simulations of ion acceleration obtained using 2D PIC and 3D PIC codes may differ and the differences between these results depend on the laser and target parameters and the ion acceleration mechanism which dominates the acceleration process [63][64][65][66][67]. In the case of ion acceleration by the TNSA mechanism, 2D simulation overestimates the cut-off ion energy values (by a factor of ∼2 and sometimes even higher) compared to the energy values obtained from 3D simulation [63,64,66].…”

Section: Discussion Of Some Limitations Of the Computer Model Usedmentioning

confidence: 99%

“…(a) It is well known that the results of numerical simulations of ion acceleration obtained using 2D PIC and 3D PIC codes may differ and the differences between these results depend on the laser and target parameters and the ion acceleration mechanism which dominates the acceleration process [63][64][65][66][67]. In the case of ion acceleration by the TNSA mechanism, 2D simulation overestimates the cut-off ion energy values (by a factor of ∼2 and sometimes even higher) compared to the energy values obtained from 3D simulation [63,64,66]. One of the reasons is that in 3D simulation, the electron density in the electron sheath on the rear side of the target is lower than in 2D (the decrease in the density of the moving sheath due to transverse expansion is faster in 3D) and as a result, the electric field accelerating the ions is weaker.…”

Section: Discussion Of Some Limitations Of the Computer Model Usedmentioning

confidence: 99%

Ultra-intense laser-accelerated ion beams for high-gain inertial fusion: the effect of the ion mass on the beam properties

Badziak¹,

Domański²

2022

Nucl. Fusion

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This paper presents the results of detailed numerical studies of the properties of ion beams generated by a laser from targets with various atomic numbers under conditions relevant for ion fast ignition (IFI) of inertial fusion. The interaction of a 200 kJ 1 ps infrared (1.05 μm) laser with Li, C, Al, Ti, Cu and CH2 flat targets with the same areal mass density was numerically simulated using an advanced 2D3V particle-in-cell code. For each target, a set of ion beam characteristics important for IFI was determined. A detailed quantitative comparison of the IFI-relevant parameters of Li, C, Al, Ti and Cu ion beams and the proton beam (from the CH2 target) was made. The laser-accelerated Cu ion beam was found to achieve significantly higher values of beam intensity, fluence and ‘useful’ energy (for IFI), having a smaller angular divergence and a narrower energy spectrum than the beam of light ions or protons. Thus, it is shown for the first time that laser-accelerated heavy ion beams can achieve IFI-relevant parameters higher than light ion or proton beams and can potentially meet IFI requirements.

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Multidimensional effects on proton acceleration using high-power intense laser pulses

Cited by 24 publications

References 48 publications

Advances in Spectral Distribution Assessment of Laser Accelerated Protons using Multilayer CR-39 Detectors

Advances in Spectral Distribution Assessment of Laser Accelerated Protons using Multilayer CR-39 Detectors

Proton acceleration from picosecond-laser interaction with a hydrocarbon target

Ultra-intense laser-accelerated ion beams for high-gain inertial fusion: the effect of the ion mass on the beam properties

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