Generation of High-Power Sub-THz Waves in Magnetized Turbulent Electron Beam Plasmas

Thumm, M.; Аржанников, А. В.; Astrelin, V. T.; Burdakov, A. V.; Иванов, И. А.; Kalinin, P. V.; Kandaurov, I. V.; Kurkuchekov, V. V.; Kuznetsov, S. А.; Макаров, М. А.; Mekler, K. I.; Polosatkin, S. V.; Попов, С. А.; Поступаев, В. В.; Rovenskikh, A. F.; Sinitsky, S. L.; Sklyarov, V. F.; Stepanov, V. D.; Trunev, Yu.A.; Тимофеев, И. В.; Vyacheslavov, L. N.

doi:10.1007/s10762-013-9969-3

Cited by 32 publications

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“…Rr, 52.35.Qz Beam-plasma interaction plays an important role in various physical phenomena such as transport of relativistic electrons in the fast ignition scheme of inertial fusion, gamma-bursts, solar type II and III radio bursts, and collisionless shock waves in the space plasma (see review [1] and references therein). Also, beam-plasma collective interaction determines the efficiency of turbulent plasma heating [2,3] and electromagnetic emission [4][5][6][7] in fusion-oriented mirror traps.One of the most popular and effective tools for theoretical studies of the beam-plasma interaction is numerical simulations by the Particle-In-Cell (PIC) method. At present there is a great number of one-, two-, and three-dimensional PIC codes developed.…”

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Note on quantitatively correct simulations of the kinetic beam-plasma instability

et al. 2015

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A large number of model particles is shown necessary for quantitatively correct simulations of the kinetic beam-plasma instability with the clouds-in-cells method. The required number of particles scales inversely with the expected growth rate, as in the kinetic regime only a narrow interval of beam velocities is resonant with the wave.PACS numbers: 52.65. Rr, 52.35.Qz Beam-plasma interaction plays an important role in various physical phenomena such as transport of relativistic electrons in the fast ignition scheme of inertial fusion, gamma-bursts, solar type II and III radio bursts, and collisionless shock waves in the space plasma (see review [1] and references therein). Also, beam-plasma collective interaction determines the efficiency of turbulent plasma heating [2,3] and electromagnetic emission [4][5][6][7] in fusion-oriented mirror traps.One of the most popular and effective tools for theoretical studies of the beam-plasma interaction is numerical simulations by the Particle-In-Cell (PIC) method. At present there is a great number of one-, two-, and three-dimensional PIC codes developed. These codes are used to reproduce fine details of the complex chain of intermediary processes that lead to plasma heating or electromagnetic radiation. The beam densities of interest n b are usually much smaller than the plasma density n p . For the fast ignition problem, the electron beams are relatively dense (n b /n p ∼ 0.1) [8][9][10]. Weakly relativistic beams with n b /n p ∼ 10 −4 ÷ 10 −3 are interesting for mirror traps [11][12][13]. Non-relativistic beams of very low density, n b /n p ∼ 10 −8 ÷ 10 −5 are of interest for radiation generation in solar radio bursts [14], though simulated with higher beam densities because of code limitations [14][15][16][17]. The numerical study usually begins from the linear stage of the beam-plasma instability, so the quantitatively correct simulation of this stage at low beam densities is important for the whole process.There are many realizations of the PIC method that differ in the algorithm of charge and current evaluation from positions of model particles. This algorithm is usually referred to as the shape function. One of the simplest shape functions is the triangular one also called CloudsIn-Cells (CIC) or linear interpolation [18]. This shape function is still widely used [14,[19][20][21][22][23][24][25] in spite of availability of more accurate algorithms [26,27].In this paper we show that an uncommonly large number of model particles is necessary for quantitatively correct simulations of the kinetic beam-plasma two-stream instability with the CIC method. The smaller the growth rate the more particles are needed. If the number of particles is insufficient, then the results are only qualitatively correct, that is the beam-plasma system behaves realistically, but the growth rate is underestimated. To prove this statement, we simulate various regimes of the twostream instability with a rather typical three-dimensional CIC code and compare the simulated growth rates with a...

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“…Also, beam-plasma collective interaction determines the efficiency of turbulent plasma heating [2,3] and electromagnetic emission [4][5][6][7] in fusion-oriented mirror traps.…”

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Note on quantitatively correct simulations of the kinetic beam-plasma instability

et al. 2015

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“…The discharge plasma current stabilizes simultaneously the beam injection process. Previous experiments have shown that the variation of the power value of the emitted electromagnetic waves correlates with the changes in the efficiency of plasma heating by the electron beam and the both wave generation and plasma heating processes lasts during the first half of the injection time [1][2][3][4][5]. It was decided therefore to maximize the number of diagnostics at the first meter of the plasma column (see.…”

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“…In view of these circumstances, we turned to the task on the generation of sub-terahertz radiation due to intense interaction of a high-current electron beam with plasma. Generation of powerful electromagnetic radiation in this frequency area under collective deceleration of highcurrent electron beam in plasma column was experimentally and theoretically studied at the Budker Institute of Nuclear Physics during last five years [1][2][3][4][5]. This generation is interpreted as result of high level power density of longitudinal (Langmuir) and/or oblique (upper-hybrid) waves excited by the strong electron beam.…”

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Properties of sub-THz waves generated by the plasma during interaction with relativistic electron beam

Иванов¹,

Аржанников²,

Burmasov³

et al. 2016

AIP Conference Proceedings

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“…The detectors were developed for spectral analysis of high-power broadband subterahertz emission from a plasma source driven by a high current relativistic electron beam at the GOL-3 plasma facility (BINP SB RAS, Novosibirsk) [7].…”

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confidence: 99%

High-performance spectrally selective pyroelectric detection of millimeter and submillimeter waves using ultra-thin metasurface absorbers

2017

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Generation of High-Power Sub-THz Waves in Magnetized Turbulent Electron Beam Plasmas

Cited by 32 publications

References 11 publications

Note on quantitatively correct simulations of the kinetic beam-plasma instability

Note on quantitatively correct simulations of the kinetic beam-plasma instability

Properties of sub-THz waves generated by the plasma during interaction with relativistic electron beam

High-performance spectrally selective pyroelectric detection of millimeter and submillimeter waves using ultra-thin metasurface absorbers

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