Theory of Stochasticity and Chaos of Electrons in Relativistic Lasers

Takabe, H.

doi:10.1007/978-3-030-49613-5_9

Cited by 1 publication

(9 citation statements)

References 28 publications

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“…It is known that with decrease of α, the probability Ψ (∆p) spreads wider with a power-law tail. For the case of α = 1, Ψ (∆p) ∝ (∆p) −2 and Lorentzian solution of ( 5) is obtained [55] .…”

Section: Stochastic Particle Acceleration and Cosmic-raysmentioning

confidence: 98%

“…Intuitively, it seems that the energy conversion efficiency is small. Recently, the author proposed a new physics to explain the cosmic-ray acceleration directly by the electromagnetic wave field in random system [55] .…”

Section: Stochastic Particle Acceleration and Cosmic-raysmentioning

confidence: 99%

“…Regardless of Alfven wave or laser wave, an electron oscillation becomes nonlinear even in plane wave, because ⃗ v × ⃗ B term becomes important. Then, the electron motion becomes chaos when an external force or abrupt change of wave phase are loaded to the oscillation system as perturbation [55] . If ∆p by the perturbation is small ∆p/p ≪ 1, the electron distribution function is approximately governed by Fokker-Planck type-equation.…”

Section: Stochastic Particle Acceleration and Cosmic-raysmentioning

confidence: 99%

“…This nonlocal jump is known as Levy's jump [55] . This concept is widely used for anomalous transport, nonlocal transport due to turbulence in real space.…”

Section: Stochastic Particle Acceleration and Cosmic-raysmentioning

confidence: 99%

“…where α is fractal index and 0 < α < 2. The definition of operator is given in [55] . FP equation is the case α = 2 and Ψ (∆p) is a Gaussian.…”

Section: Stochastic Particle Acceleration and Cosmic-raysmentioning

confidence: 99%

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Recent progress of laboratory astrophysics with intense lasers

Takabe

Kuramitsu

2021

High Pow Laser Sci Eng

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Thanks to a rapid progress of high-power lasers soon after the birth of laser by T. H. Maiman in 1960, intense lasers have been developed mainly for studying scientific feasibility of the laser fusion in the world wide. Inertial confinement fusion with intense laser has attracted attention as a new future energy after two oil crises from 1970s -1980s. From the beginning, the most challenging physics is known to be the hydrodynamic instability to realize the spherical implosion to achieve more than 1000 times the solid density. A lot of studies have been carried out theoretically and experimentally on the hydrodynamic instability and resultant turbulent mixing of compressible fluids. During such activities in laboratory, the explosion of supernova SN1987A was observed in the sky on February 23, 1987. The x-ray satellites have revealed that the hydrodynamic instability is a key issue to understand the physics of supernova explosion. After strong interaction of laser plasma researchers and astrophysicists, the laboratory astrophysics with intense lasers has been proposed and promoted around the end of 1990s. The original subject was mainly related to hydrodynamic instabilities. However, after two decades of the laboratory astrophysics research, we can now find a diversity of its research topics. It has been demonstrated that a variety of nonlinear physics of collisionless plasmas can be studied in laser ablation plasmas in the last decade theoretically and experimentally. In the present paper, we shed light on the recent ten topics intensively studied in laboratory experiments. Brief review is given by citing recent papers. Then, modeling cosmic-ray acceleration with lasers is reviewed in a following session as a special topic to be the coming main topics in laboratory astrophysics research.

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Section: Stochastic Particle Acceleration and Cosmic-raysmentioning

confidence: 98%

Section: Stochastic Particle Acceleration and Cosmic-raysmentioning

confidence: 99%

Section: Stochastic Particle Acceleration and Cosmic-raysmentioning

confidence: 99%

“…This nonlocal jump is known as Levy's jump [55] . This concept is widely used for anomalous transport, nonlocal transport due to turbulence in real space.…”

Section: Stochastic Particle Acceleration and Cosmic-raysmentioning

confidence: 99%

“…where α is fractal index and 0 < α < 2. The definition of operator is given in [55] . FP equation is the case α = 2 and Ψ (∆p) is a Gaussian.…”

Section: Stochastic Particle Acceleration and Cosmic-raysmentioning

confidence: 99%

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