Laboratory astrophysics with laser-driven strong magnetic fields in China

Wang, Feilu; Pei, Xiaoxing; Han, Bo; Wei, Huigang; Yuan, Dawei; Liang, G. Y.; Zhao, Gang; Zhong, Jiayong; Zhang, Zhe; Zhu, Baojun; Li, Yanfei; Li, Fang; Li, Yutong; Zeng, Siliang; Zou, Shiyang; Zhang, Jie

doi:10.1017/hpl.2016.27

Cited by 8 publications

(5 citation statements)

References 25 publications

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“…Figure 1 shows a schematic diagram of the experimental setup, which is similar to that in our previous work. [13,[19][20][21][22][23][24] A pair of opposing copper (Cu) foils were separated by 4.5 mm. One bunch was focused on the left-foil (in the end view) with a spot diameter of 150 µm.…”

Section: Methodsmentioning

confidence: 99%

Application of multi-pulse optical imaging to measure evolution of laser-produced counter-streaming flows

Yuan¹,

Li²,

Zhu³

et al. 2017

Chinese Phys. B

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A counter-streaming flow system is a test-bed to investigate the astrophysical collisionless shock (CS) formation in the laboratory. Electrostatic/electromagnetic instabilities, competitively growing in the system and exciting the CS formation, are sensitive to the flows parameters. One of the most important parameters is the velocity, determining what kind of instability contributes to the shock formation. Here we successfully measure the evolution of the counter-streaming flows within one shot using a multi-pulses imaging diagnostic technique. With the technique, the average velocity of the high-density-part (n e ≥ 8-9 × 10 19 cm −3 ) of the flow is directly measured to be of ∼ 10 6 cm/s between 7 ns and 17 ns. Meanwhile, the average velocity of the low-density-part (n e ≤ 2 × 10 19 cm −3 ) can be estimated as ∼ 10 7 cm/s. The experimental results show that a collisionless shock is formed during the low-density-part of the flow interacting with each other.

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Section: Methodsmentioning

confidence: 99%

Application of multi-pulse optical imaging to measure evolution of laser-produced counter-streaming flows

Yuan¹,

Li²,

Zhu³

et al. 2017

Chinese Phys. B

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“…A wide range of possible applications is foreseen for this scheme, e.g. controlling high-energy charged particles transport [7,8], enhancing fusion output in experiments on laser-driven implosion of magnetized inertial confinement fusion targets [9,10,11] or producing magnetized plasma for laboratory studies of astrophysical processes [12,13,14]. Their compact size, no need of bulky and expensive capacitor banks and the ability to create magnetic fields one or two orders of magnitude higher than those reached with other methods make laser-driven generators preferable in many cases.…”

Section: Conversion Of Laser Light To Magnetic Field In Laser-driven Coilsmentioning

confidence: 99%

Machine Learning Analysis of Quasi-Stationary Magnetic Fields Optically-Driven by Short Laser Pulses

Kochetkov

Bukharskii

Ehret

et al. 2021

Preprint

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Optical generation of kilo-tesla scale magnetic fields enables prospective technologies and fundamental studies with unprecedentedly high magnetic field energy density. A question is the optimal configuration of proposed setups, where plenty of physical phenomena accompany the generation and complicate both theoretical studies and experimental realizations. Short laser drivers seem more suitable in many applications, though the process is tangled by an intrinsic transient nature. In this work, an artificial neural network is engaged for unravelling main features of the magnetic field excited with a picosecond laser pulse. The trained neural network acquires an ability to read the magnetic field values from experimental data, extremely facilitating interpretation of the experimental results. The conclusion is that the short sub-picosecond laser pulse may generate a quasi-stationary magnetic field structure living on a hundred picosecond time scale, when the induced current forms a closed circuit.

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“…The dramatic increase in light intensity has revealed an entirely new set of phenomena such as strong-field QED effects, highenergy-density state creation, high-flux particle beam generation, bright x/γ-ray generation and strong electromagnetic field production [4][5][6][7][8]. High-intensity laser-matter interaction also provides a unique way to explore such research areas as high-field science, high-energy-density physics, nuclear physics and laboratory astrophysics [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

XingGuang III laser facility and its experimental ability to drive high-energy particle beams

Wu¹,

Zhu²,

Dong³

et al. 2020

Laser Phys.

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The XingGuang III (XGIII) laser facility at the Science and Technology on Plasma Physics Laboratory at the Laser Fusion Research Center is unique in the world and consists of one 0.7 PW picosecond beam, one 0.6 PW femtosecond beam and one 1 kJ nanosecond laser beam. The three laser beams with different wavelengths and durations can converge in the target chamber with high spatial and temporal synchronization. Because of its smart beam configurations, XGIII providesunique opportunities for multi-beam pump-probe experiments in research fields such as high-energy density physics, plasma physics and laboratory astrophysics. Laser-driven high-energy particle beams were experimentally investigated, and found to play an important role in pump-probe schemes. High-energy electrons, protons, positrons and their experimental scalings were obtained using the picosecond laser beam with an intensity of 10 19 W cm −2 . A two-beam pump-probe experiment was demonstrated in which the plasma channel of the femtosecond laser pulse propagating in underdense plasma was imaged by a proton beam driven by the picosecond laser. Furthermore, a three-dimensional reconstruction of the plasma structure may be achieved in multi-beam pump-probe experiments with XGIII.

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Laboratory astrophysics with laser-driven strong magnetic fields in China

Cited by 8 publications

References 25 publications

Application of multi-pulse optical imaging to measure evolution of laser-produced counter-streaming flows

Application of multi-pulse optical imaging to measure evolution of laser-produced counter-streaming flows

Machine Learning Analysis of Quasi-Stationary Magnetic Fields Optically-Driven by Short Laser Pulses

XingGuang III laser facility and its experimental ability to drive high-energy particle beams

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