Model experiment of cosmic ray acceleration due to an incoherent wakefield induced by an intense laser pulse

Kuramitsu, Yasuhiro; Nakanii, Nobuhiko; Kondo, Kimito; Sakawa, Y.; Mori, Yoshitaka; Miura, Eisuke; Tsuji, K.; Kimura, Kohji; Fukumochi, S.; Kashihara, M.; Tanimoto, Tsuyoshi; Nakamura, H.; Ishikura, Teruyuki; Takeda, Kazuyuki; Tampo, M.; Kodama, R.; Kitagawa, Yoneyoshi; Mima, K.; Tanaka, K. A.; Hoshino, Masahiro; Takabe, H.

doi:10.1063/1.3528434

Cited by 25 publications

(17 citation statements)

References 17 publications

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“…This can contribute to their hydrodynamical turbulent state, help confine cosmic rays in the regions between the many shocklets, and, thus, push the cosmic ray gradually up to high energies. Our results demonstrate the capability of a laboratory experiment to investigate the origin of cosmic rays [19,20]. This will be done with the world's largest laser, the National Ignition Facility.…”

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confidence: 73%

Kelvin-Helmholtz Turbulence Associated with Collisionless Shocks in Laser Produced Plasmas

et al. 2012

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We report the experimental results of a turbulent electric field driven by Kelvin-Helmholtz instability associated with laser produced collisionless shock waves. By irradiating an aluminum double plane target with a high-power laser, counterstreaming plasma flows are generated. As the consequence of the two plasma interactions, two shock waves and the contact surface are excited. The shock electric field and transverse modulation of the contact surface are observed by proton radiography. Performing hydrodynamic simulations, we reproduce the time evolutions of the reverse shocks and the transverse modulation driven by Kelvin-Helmholtz instability.

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confidence: 73%

Kelvin-Helmholtz Turbulence Associated with Collisionless Shocks in Laser Produced Plasmas

et al. 2012

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“…While we improve proton radiography under the influence of the external magnetic field, we have complementary tools to measure the magnetic field such as Faraday rotation 23 and magnetic field induction probes 31 . We also have tools to measure the distribution functions of accelerated particles 32,33 , and we would like to investigate the particle acceleration in a RMI driven turbulence in the future.…”

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confidence: 99%

Model experiment of magnetic field amplification in laser-produced plasmas via the Richtmyer-Meshkov instability

et al. 2016

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A model experiment of magnetic field amplification (MFA) via the Richtmyer-Meshkov instability (RMI) in supernova remnants (SNRs) was performed using a high-power laser. In order to account for very-fast acceleration of cosmic rays observed in SNRs, it is considered that the magnetic field has to be amplified by orders of magnitude from its background level. A possible mechanism for the MFA in SNRs is stretching and mixing of the magnetic field via the RMI when shock waves pass through dense molecular clouds in interstellar media. In order to model the astrophysical phenomenon in laboratories, there are three necessary factors for the RMI to be operative: a shock wave, an external magnetic field, and density inhomogeneity. By irradiating a double-foil target with several laser beams with focal spot displacement under influence of an external magnetic field, shock waves were excited and passed through the density inhomogeneity. Radiative hydrodynamic simulations show that the inhomogeneous density structure results in the RMI evolution and that the higher MFA than that without the density inhomogeneity.

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“…An alternative approach to verify the acceleration models is laboratory experiment with intense lasers. In this chapter we consider the precursor electromagnetic waves in the astrophysical collisionless shock discussed in [119] and possible verification of the model in the laboratories [120,132,133] .…”

Section: Introductionmentioning

confidence: 99%

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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Model experiment of cosmic ray acceleration due to an incoherent wakefield induced by an intense laser pulse

Cited by 25 publications

References 17 publications

Kelvin-Helmholtz Turbulence Associated with Collisionless Shocks in Laser Produced Plasmas

Kelvin-Helmholtz Turbulence Associated with Collisionless Shocks in Laser Produced Plasmas

Model experiment of magnetic field amplification in laser-produced plasmas via the Richtmyer-Meshkov instability

Recent progress of laboratory astrophysics with intense lasers

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