Regimes of enhanced electromagnetic emission in beam-plasma interactions

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Regimes of enhanced electromagnetic emission in beam-plasma interactions. / Timofeev, I. V.; Annenkov, V. V.; Arzhannikov, A. V.

In: Physics of Plasmas, Vol. 22, No. 11, 113109, 01.11.2015.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{9c9bda0716d84305be05c5c112818e0b,

title = "Regimes of enhanced electromagnetic emission in beam-plasma interactions",

abstract = "The ways to improve the efficiency of electromagnetic waves generation in laboratory experiments with high-current relativistic electron beams injected into a magnetized plasma are discussed. It is known that such a beam can lose, in a plasma, a significant part of its energy by exciting a high level of turbulence and heating plasma electrons. Beam-excited plasma oscillations may simultaneously participate in nonlinear processes resulting in a fundamental and second harmonic emissions. It is obvious, however, that in the developed plasma turbulence the role of these emissions in the total energy balance is always negligible. In this paper, we investigate whether electromagnetic radiation generated in the beam-plasma system can be sufficiently enhanced by the direct linear conversion of resonant beam-driven modes into electromagnetic ones on preformed regular inhomogeneities of plasma density. Due to the high power of relativistic electron beams, the mechanism discussed may become the basis for the generator of powerful sub-terahertz radiation.",

author = "Timofeev, {I. V.} and Annenkov, {V. V.} and Arzhannikov, {A. V.}",

year = "2015",

month = nov,

day = "1",

doi = "10.1063/1.4935890",

language = "English",

volume = "22",

journal = "Physics of Plasmas",

issn = "1070-664X",

publisher = "American Institute of Physics",

number = "11",

}

RIS

TY - JOUR

T1 - Regimes of enhanced electromagnetic emission in beam-plasma interactions

AU - Timofeev, I. V.

AU - Annenkov, V. V.

AU - Arzhannikov, A. V.

PY - 2015/11/1

Y1 - 2015/11/1

N2 - The ways to improve the efficiency of electromagnetic waves generation in laboratory experiments with high-current relativistic electron beams injected into a magnetized plasma are discussed. It is known that such a beam can lose, in a plasma, a significant part of its energy by exciting a high level of turbulence and heating plasma electrons. Beam-excited plasma oscillations may simultaneously participate in nonlinear processes resulting in a fundamental and second harmonic emissions. It is obvious, however, that in the developed plasma turbulence the role of these emissions in the total energy balance is always negligible. In this paper, we investigate whether electromagnetic radiation generated in the beam-plasma system can be sufficiently enhanced by the direct linear conversion of resonant beam-driven modes into electromagnetic ones on preformed regular inhomogeneities of plasma density. Due to the high power of relativistic electron beams, the mechanism discussed may become the basis for the generator of powerful sub-terahertz radiation.

AB - The ways to improve the efficiency of electromagnetic waves generation in laboratory experiments with high-current relativistic electron beams injected into a magnetized plasma are discussed. It is known that such a beam can lose, in a plasma, a significant part of its energy by exciting a high level of turbulence and heating plasma electrons. Beam-excited plasma oscillations may simultaneously participate in nonlinear processes resulting in a fundamental and second harmonic emissions. It is obvious, however, that in the developed plasma turbulence the role of these emissions in the total energy balance is always negligible. In this paper, we investigate whether electromagnetic radiation generated in the beam-plasma system can be sufficiently enhanced by the direct linear conversion of resonant beam-driven modes into electromagnetic ones on preformed regular inhomogeneities of plasma density. Due to the high power of relativistic electron beams, the mechanism discussed may become the basis for the generator of powerful sub-terahertz radiation.

UR - http://www.scopus.com/inward/record.url?scp=84969673083&partnerID=8YFLogxK

UR - https://www.elibrary.ru/item.asp?id=27156646

U2 - 10.1063/1.4935890

DO - 10.1063/1.4935890

M3 - Article

AN - SCOPUS:84969673083

VL - 22

JO - Physics of Plasmas

JF - Physics of Plasmas

SN - 1070-664X

IS - 11

M1 - 113109

ER -

ID: 27344685