Laser ion acceleration control

Kawata, Shigeo; Takano, Masahiro; Kamiyama, Daiki; Barada, Daisuke; Y., Y.; Kong, Q.; Wang, P. X.; Gu, Y. J.; Li, X.

doi:10.1109/lo.2014.6886331

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…The interaction of relativistically intense laser pulses with solid targets has stimulated considerable interest because of its practical applications in laser-driven particle acceleration [1][2][3][4][5][6][7] , high-brightness ultrafast hard X-ray and K α source [8][9][10][11] , cancer treatment [12,13] , fast ignition in inertial confinement fusion [14] , etc. A crucial issue, in all these applications, is to produce high-quality forward hot electrons efficiently.…”

Section: Introductionmentioning

confidence: 99%

Generation mechanism of 100 MG magnetic fields in the interaction of ultra-intense laser pulse with nanostructured target

Tian

Cai

Zhang

et al. 2020

High Pow Laser Sci Eng

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Experimental and simulation data [Moreau et al., Plasma Phys. Control. Fusion 62, 014013 (2019); Kaymak et al., Phys. Rev. Lett. 117, 035004 (2016)] indicate that self-generated magnetic fields play an important role in enhancing the flux and energy of relativistic electrons accelerated by ultra-intense laser pulse irradiation with nanostructured arrays. A fully relativistic analytical model for the generation of the magnetic field based on electron magneto-hydrodynamic description is presented here. The analytical model shows that this self-generated magnetic field originates in the nonparallel density gradient and fast electron current at the interfaces of a nanolayered target. A general formula for the self-generated magnetic field is found, which closely agrees with the simulation scaling over the relevant intensity range. The result is beneficial to the experimental designs for the interaction of the laser pulse with the nanostructured arrays to improve laser-to-electron energy coupling and the quality of forward hot electrons.

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Section: Introductionmentioning

confidence: 99%

Generation mechanism of 100 MG magnetic fields in the interaction of ultra-intense laser pulse with nanostructured target

Tian

Cai

Zhang

et al. 2020

High Pow Laser Sci Eng

View full text Add to dashboard Cite

show abstract

“…In addition to the first-stage acceleration in the plasma channel, we find a second effect at the rear end of the gas jet, which significantly enhances the proton energies. Around the sharp rear boundary of the target, transverse expansion of the magnetic field generates a strong longitudinal field which contributes as a secondary acceleration, known as magnetic vortex acceleration [45][46][47]. When the electrons driven by the laser pulse pass though the rear boundary, the azimuthal magnetic fields expands into the vacuum under large angles.…”

mentioning

confidence: 99%

Spin polarized proton beam generation from gas-jet targets by intense laser pulses

Jin,

Wen,

Zhang

et al. 2020

Preprint

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A method of generating spin polarized proton beams from a gas jet by using a multi-petawatt laser is put forward. With currently available techniques of producing pre-polarized monatomic gases from photodissociated hydrogen halide molecules and petawatt lasers, proton beams with energy 50 MeV and ∼ 80% polarization are proved to be obtained. Two-stage acceleration and spin dynamics of protons are investigated theoretically and by means of fully self-consistent three dimensional particle-in-cell simulations. Our results predict the dependence of the beam polarization on the intensity of the driving laser pulse. Generation of bright energetic polarized proton beams would open a domain of polarization studies with laser driven accelerators, and have potential application to enable effective detection in explorations of quantum chromodynamics.

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Laser ion acceleration control

Cited by 2 publications

References 2 publications

Generation mechanism of 100 MG magnetic fields in the interaction of ultra-intense laser pulse with nanostructured target

Generation mechanism of 100 MG magnetic fields in the interaction of ultra-intense laser pulse with nanostructured target

Spin polarized proton beam generation from gas-jet targets by intense laser pulses

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