Dynamics of electron holes in an electron–oxygen-ion plasma

Bengt Eliasson, Padma Shukla

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The dynamics of electron holes (EHs) in an electron–oxygen-ion plasma is studied by means of Vlasov simulations. It is found that EHs are attracted by ion density maxima but repelled by ion density minima. Standing EHs repel ions owing to the positive EH potential, creating an ion density cavity which ejects the EH, which propagates away from the cavity with a constant speed. On the other hand, propagating EHs can be trapped at ion density maxima. The results of our simulations will help in understanding the nonlinear dynamics of EHs in space and laboratory plasmas.
LanguageEnglish
Article number045001
Number of pages4
JournalPhysical Review Letters
Volume93
Issue number4
DOIs
Publication statusPublished - 19 Jul 2004

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oxygen ions
electrons
space laboratories
cavities
space plasmas
simulation
ions

Keywords

  • electron holes
  • Vlasov simulations
  • electron-ion plasma

Cite this

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abstract = "The dynamics of electron holes (EHs) in an electron–oxygen-ion plasma is studied by means of Vlasov simulations. It is found that EHs are attracted by ion density maxima but repelled by ion density minima. Standing EHs repel ions owing to the positive EH potential, creating an ion density cavity which ejects the EH, which propagates away from the cavity with a constant speed. On the other hand, propagating EHs can be trapped at ion density maxima. The results of our simulations will help in understanding the nonlinear dynamics of EHs in space and laboratory plasmas.",
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Dynamics of electron holes in an electron–oxygen-ion plasma. / Eliasson, Bengt; Shukla, Padma.

In: Physical Review Letters, Vol. 93, No. 4, 045001, 19.07.2004.

Research output: Contribution to journalArticle

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T1 - Dynamics of electron holes in an electron–oxygen-ion plasma

AU - Eliasson, Bengt

AU - Shukla, Padma

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N2 - The dynamics of electron holes (EHs) in an electron–oxygen-ion plasma is studied by means of Vlasov simulations. It is found that EHs are attracted by ion density maxima but repelled by ion density minima. Standing EHs repel ions owing to the positive EH potential, creating an ion density cavity which ejects the EH, which propagates away from the cavity with a constant speed. On the other hand, propagating EHs can be trapped at ion density maxima. The results of our simulations will help in understanding the nonlinear dynamics of EHs in space and laboratory plasmas.

AB - The dynamics of electron holes (EHs) in an electron–oxygen-ion plasma is studied by means of Vlasov simulations. It is found that EHs are attracted by ion density maxima but repelled by ion density minima. Standing EHs repel ions owing to the positive EH potential, creating an ion density cavity which ejects the EH, which propagates away from the cavity with a constant speed. On the other hand, propagating EHs can be trapped at ion density maxima. The results of our simulations will help in understanding the nonlinear dynamics of EHs in space and laboratory plasmas.

KW - electron holes

KW - Vlasov simulations

KW - electron-ion plasma

UR - http://link.aps.org/doi/10.1103/PhysRevLett.93.045001

U2 - 10.1103/PhysRevLett.93.045001

DO - 10.1103/PhysRevLett.93.045001

M3 - Article

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JO - Physical Review Letters

T2 - Physical Review Letters

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SN - 0031-9007

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