Collective energy-spectrum broadening of a proton beam in a gas-discharge plasma

Cheng, Rui; Hu, Zhang-Hu; Hui, De-Xuan; Zhao, Yongtao; Chen, Yanhong; Gao, Fei; Lei, Yu; Wang, Yuyu; Zhu, Bing-Li; Yang, Yang; Wang, Zhao; Zhou, Zexian; Wang, You‐Nian; Yang, Jie

doi:10.1103/physreve.103.063216

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…The generation of high-energy electrons during the interaction of a low-energy ion beam with plasma had been studied with a one-dimensional (1D) electrostatic kinetic simulation [13]. Recently, the collective energy-spectrum broadening of a proton beam at 270 keV due to the two-stream instability excitation was observed experimentally [14].…”

Section: Introductionmentioning

confidence: 99%

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High energy electron beam generation during interaction of a laser accelerated proton beam with a gas-discharge plasma

Xu¹,

Hu²,

Hui³

et al. 2022

Plasma Sci. Technol.

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The study of the interaction between ion beam and plasma is very important to the areas of inertial fusion energy and high energy density physics (HEDP). With detailed one-dimensional (1D) electromagnetic particle-in-cell (PIC) simulations, we investigate here the interaction of a laser-accelerated proton beam assuming an ideal monoenergetic beam with a gas-discharge plasma. After the saturation stage of the two-stream instability excited by the proton beam, significant high energy electrons are observed, with maximum energy approaching 2 MeV, and a new two-stream instability occurs between the high energy electrons and background electrons. The trajectories of plasma electrons are studied, showing the process of electron trapping and de-trapping from the wakefield.

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Section: Introductionmentioning

confidence: 99%

“…The unstable wave produced by two-stream instability can grow and eventually reach saturation by trapping either plasma electrons or beam protons[33]. For a collisionless plasma and monoenergetic beam in 1D simulation, the initial growth rate[8,14] of the instability is n n m m 0.7 4.5 10 pe…”

mentioning

confidence: 99%

High energy electron beam generation during interaction of a laser accelerated proton beam with a gas-discharge plasma

Xu¹,

Hu²,

Hui³

et al. 2022

Plasma Sci. Technol.

View full text Add to dashboard Cite

show abstract

In situ ions energy spectrum measurement using a diamond detector in laser-accelerated ions–plasma interaction

Zhou

Guo²,

Cheng

et al. 2022

Nuclear Instruments and Methods in Physics Research Section A:

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Simulation study of coupled two-stream and current filamentation instability excited by accelerator electron beams in plasmas

Zhao

et al. 2022

Physics of Plasmas

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A gas-discharge plasma device is simulated with COMSOL software, and the obtained plasma density profile is input into a two-dimensional particle-in-cell code, in which the transport of relativistic electron beams in the plasma with an actual density profile is investigated. The results show that the device can produce a wide range of high-density plasmas with the maximum density approaching [Formula: see text] m−3. With the relativistic electron beams produced from a linear electron accelerator, the gas-discharge plasma is shown to be an ideal medium for the investigation of coupled two-stream and current filamentation instability.

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Collective energy-spectrum broadening of a proton beam in a gas-discharge plasma

Cited by 4 publications

References 24 publications

High energy electron beam generation during interaction of a laser accelerated proton beam with a gas-discharge plasma

High energy electron beam generation during interaction of a laser accelerated proton beam with a gas-discharge plasma

In situ ions energy spectrum measurement using a diamond detector in laser-accelerated ions–plasma interaction

Simulation study of coupled two-stream and current filamentation instability excited by accelerator electron beams in plasmas

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