Analysis of velocity diffusion of electrons with Vlasov-Poisson simulations

Jouko Berndtson, Jukka Heikkinen, Seppo Karttunen, Timo Pättikangas, Rainer Salomaa

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Abstract

Wave-induced velocity diffusion is studied with a one-dimensional relativistic Vlasov-Poisson code. The diffusion coefficient is determined by following test electrons in the self-consistent electrostatic field formed by a narrow spectrum of electron plasma waves. The diffusion coefficient is found to be slightly larger than the quasilinear value at intermediate values of Chirikov's overlap parameter. The largest deviation is about 20-30%. At higher values of the overlap parameter, the diffusion is slower than quasilinear for a small number of field modes, but faster than quasilinear for a large number of the modes.
Original languageEnglish
Pages (from-to)57-71
Number of pages15
JournalPlasma Physics and Controlled Fusion
Volume36
Issue number1
DOIs
Publication statusPublished - 1994
MoE publication typeA1 Journal article-refereed

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diffusion coefficient
Electrons
plasma waves
electron plasma
electrons
simulation
deviation
Plasma waves
electric fields
Electric fields

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Berndtson, Jouko ; Heikkinen, Jukka ; Karttunen, Seppo ; Pättikangas, Timo ; Salomaa, Rainer. / Analysis of velocity diffusion of electrons with Vlasov-Poisson simulations. In: Plasma Physics and Controlled Fusion. 1994 ; Vol. 36, No. 1. pp. 57-71.
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author = "Jouko Berndtson and Jukka Heikkinen and Seppo Karttunen and Timo P{\"a}ttikangas and Rainer Salomaa",
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Analysis of velocity diffusion of electrons with Vlasov-Poisson simulations. / Berndtson, Jouko; Heikkinen, Jukka; Karttunen, Seppo; Pättikangas, Timo; Salomaa, Rainer.

In: Plasma Physics and Controlled Fusion, Vol. 36, No. 1, 1994, p. 57-71.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Analysis of velocity diffusion of electrons with Vlasov-Poisson simulations

AU - Berndtson, Jouko

AU - Heikkinen, Jukka

AU - Karttunen, Seppo

AU - Pättikangas, Timo

AU - Salomaa, Rainer

N1 - Project code: ENE0630

PY - 1994

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N2 - Wave-induced velocity diffusion is studied with a one-dimensional relativistic Vlasov-Poisson code. The diffusion coefficient is determined by following test electrons in the self-consistent electrostatic field formed by a narrow spectrum of electron plasma waves. The diffusion coefficient is found to be slightly larger than the quasilinear value at intermediate values of Chirikov's overlap parameter. The largest deviation is about 20-30%. At higher values of the overlap parameter, the diffusion is slower than quasilinear for a small number of field modes, but faster than quasilinear for a large number of the modes.

AB - Wave-induced velocity diffusion is studied with a one-dimensional relativistic Vlasov-Poisson code. The diffusion coefficient is determined by following test electrons in the self-consistent electrostatic field formed by a narrow spectrum of electron plasma waves. The diffusion coefficient is found to be slightly larger than the quasilinear value at intermediate values of Chirikov's overlap parameter. The largest deviation is about 20-30%. At higher values of the overlap parameter, the diffusion is slower than quasilinear for a small number of field modes, but faster than quasilinear for a large number of the modes.

U2 - 10.1088/0741-3335/36/1/005

DO - 10.1088/0741-3335/36/1/005

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JO - Plasma Physics and Controlled Fusion

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