Stopping and transport of fast electrons in superdense matter

Okabayashi, A.; Habara, H.; Yabuuchi, T.; Iwawaki, T.; Tanaka, K. A.

doi:10.1063/1.4816812

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…One of the essential elements in the generation of transient hot solid-density plasmas by ultra-high intensity (UHI) lasers is the relativistic electron generation [1][2][3] and transport dynamics [3][4][5][6][7]. Near the laser focus, the current density of the relativistic electrons can exceed 10 13 A/cm 2 [3].…”

Section: Introductionmentioning

confidence: 99%

Nanoscale femtosecond imaging of transient hot solid density plasmas with elemental and charge state sensitivity using resonant coherent diffraction

et al. 2016

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Here we propose to exploit the low energy bandwidth, small wavelength and penetration power of ultrashort pulses from XFELs for resonant Small Angle Scattering (SAXS) on plasma structures in laser excited plasmas. Small angle scattering allows to detect nanoscale density fluctuations in forward scattering direction. Typically, the SAXS signal from laser excited plasmas is expected to be dominated by the free electron distribution. We propose that the ionic scattering signal becomes visible when the X-ray energy is in resonance with an electron transition between two bound states (Resonant coherent X-ray diffraction, RCXD). In this case the scattering cross-section dramatically increases so that the signal of X-ray scattering from ions silhouettes against the free electron scattering background which allows to measure the opacity and derived quantities with high spatial and temporal resolution, being fundamentally limited only by the X-ray wavelength and timing. Deriving quantities such as ion spatial distribution, charge state distribution and plasma temperature with such high spatial and temporal resolution will make a vast number of processes in shortpulse laser-solid interaction accessible for direct experimental observation e.g. hole-boring and shock propagation, filamentation and instability dynamics, electron transport, heating and ultrafast ionization dynamics.

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Section: Introductionmentioning

confidence: 99%

Nanoscale femtosecond imaging of transient hot solid density plasmas with elemental and charge state sensitivity using resonant coherent diffraction

et al. 2016

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3D Monte-Carlo model to study the transport of hot electrons in the context of inertial confinement fusion. Part I

Tentori

Colaïtis

Batani

2022

Matter and Radiation at Extremes

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We describe the development of a 3D Monte-Carlo model to study hot-electron transport in ionized or partially ionized targets, considering regimes typical of inertial confinement fusion. Electron collisions are modeled using a mixed simulation algorithm that considers both soft and hard scattering phenomena. Soft collisions are modeled according to multiple-scattering theories, i.e., considering the global effects of the scattering centers on the primary particle. Hard collisions are simulated by considering a two-body interaction between an electron and a plasma particle. Appropriate differential cross sections are adopted to correctly model scattering in ionized or partially ionized targets. In particular, an analytical form of the differential cross section that describes a collision between an electron and the nucleus of a partially ionized atom in a plasma is proposed. The loss of energy is treated according to the continuous slowing down approximation in a plasma stopping power theory. Validation against Geant4 is presented. The code will be implemented as a module in 3D hydrodynamic codes, providing a basis for the development of robust shock ignition schemes and allowing more precise interpretations of current experiments in planar or spherical geometries.

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Molecular dynamics investigation of the stopping power of warm dense hydrogen for electrons

Liu

Zhang

et al. 2021

Phys. Rev. E

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Stopping and transport of fast electrons in superdense matter

Cited by 3 publications

References 29 publications

Nanoscale femtosecond imaging of transient hot solid density plasmas with elemental and charge state sensitivity using resonant coherent diffraction

Nanoscale femtosecond imaging of transient hot solid density plasmas with elemental and charge state sensitivity using resonant coherent diffraction

3D Monte-Carlo model to study the transport of hot electrons in the context of inertial confinement fusion. Part I

Molecular dynamics investigation of the stopping power of warm dense hydrogen for electrons

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