Convective amplification of a three-wave parametric instability in inhomogeneous plasma

Zhao, Aihui; Gao, Zhe

doi:10.1063/1.4831962

Title: Convective amplification of a three-wave parametric instability in inhomogeneous plasma

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Abstract

The three-wave parametric instability in inhomogeneous plasma is revisited and the inconsistency of the convective amplification in previous literatures is resolved. By employing multiple methods, the amplification factor of the decay mode due to the inhomogeneity is confirmed as A=πγ{sub 0}{sup 2}/(v{sub g1x}v{sub g2x}κ{sup ′}), which is independent of the linear damping rate of the decay mode, where γ{sub 0} is the nonlinear growth rate in homogeneous plasma, v{sub g1x} and v{sub g2x} are the group velocities in the x direction of the two decay modes and κ{sup ′} is the derivative of the wavevector mismatch of the three coupled waves due to the plasma inhomogeneity.

Authors:

Zhao, Aihui; Gao, Zhe ^[1]

Department of Engineering Physics, Tsinghua University, Beijing 100084 (China)

Publication Date:: Fri Nov 15 00:00:00 EST 2013

OSTI Identifier:: 22218470

Resource Type:: Journal Article

Journal Name:: Physics of Plasmas

Additional Journal Information:: Journal Volume: 20; Journal Issue: 11; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; AMPLIFICATION; CONVECTION; DAMPING; HOMOGENEOUS PLASMA; INHOMOGENEOUS PLASMA; NONLINEAR PROBLEMS; PARAMETRIC INSTABILITIES; PLASMA WAVES; VELOCITY

Citation Formats


                    Zhao, Aihui, and Gao, Zhe. Convective amplification of a three-wave parametric instability in inhomogeneous plasma.  United States: N. p., 2013. 
        Web.  doi:10.1063/1.4831962.

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                    Zhao, Aihui, & Gao, Zhe. Convective amplification of a three-wave parametric instability in inhomogeneous plasma.  United States.  https://doi.org/10.1063/1.4831962

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                    Zhao, Aihui, and Gao, Zhe. 2013.  
        "Convective amplification of a three-wave parametric instability in inhomogeneous plasma".  United States.  https://doi.org/10.1063/1.4831962.

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@article{osti_22218470,

  title        = {Convective amplification of a three-wave parametric instability in inhomogeneous plasma},

  author       = {Zhao, Aihui and Gao, Zhe},

  abstractNote = {The three-wave parametric instability in inhomogeneous plasma is revisited and the inconsistency of the convective amplification in previous literatures is resolved. By employing multiple methods, the amplification factor of the decay mode due to the inhomogeneity is confirmed as A=πγ{sub 0}{sup 2}/(v{sub g1x}v{sub g2x}κ{sup ′}), which is independent of the linear damping rate of the decay mode, where γ{sub 0} is the nonlinear growth rate in homogeneous plasma, v{sub g1x} and v{sub g2x} are the group velocities in the x direction of the two decay modes and κ{sup ′} is the derivative of the wavevector mismatch of the three coupled waves due to the plasma inhomogeneity.},

  doi          = {10.1063/1.4831962},

  url          = {https://www.osti.gov/biblio/22218470},
  journal      = {Physics of Plasmas},

  issn         = {1070-664X},

  number       = 11,

  volume       = 20,

  place        = {United States},

  year         = {Fri Nov 15 00:00:00 EST 2013},

  month        = {Fri Nov 15 00:00:00 EST 2013}

}

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