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Title: How electron two-stream instability drives cyclic Langmuir collapse and continuous coherent emission

Abstract

Continuous plasma coherent emission is maintained by repetitive Langmuir collapse driven by the nonlinear evolution of a strong electron two-stream instability. The Langmuir waves are modulated by solitary waves in the linear stage and electrostatic whistler waves in the nonlinear stage. Modulational instability leads to Langmuir collapse and electron heating that fills in cavitons. The high pressure is released via excitation of a short-wavelength ion acoustic mode that is damped by electrons and reexcites small-scale Langmuir waves; this process closes a feedback loop that maintains the continuous coherent emission.

Authors:
ORCiD logo [1];  [2];  [3];  [4]
  1. Department of Astronomy, University of Maryland, College Park, MD 20742,, Heliospheric Physics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771,
  2. Heliospheric Physics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771,
  3. Department of Physics, University of California, San Diego, La Jolla, CA 92093,
  4. Department of Physics, University of Maryland, College Park, MD 20742
Publication Date:
Research Org.:
Univ. of California, San Diego, CA (United States)
Sponsoring Org.:
USDOE; National Aeronautics and Space Administration (NASA)
OSTI Identifier:
1341768
Alternate Identifier(s):
OSTI ID: 1465122
Grant/Contract Number:  
FG02-04ER54738; NNG04EB99C
Resource Type:
Published Article
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Volume: 114 Journal Issue: 7; Journal ID: ISSN 0027-8424
Publisher:
Proceedings of the National Academy of Sciences
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Che, Haihong, Goldstein, Melvyn L., Diamond, Patrick H., and Sagdeev, Roald Z. How electron two-stream instability drives cyclic Langmuir collapse and continuous coherent emission. United States: N. p., 2017. Web. doi:10.1073/pnas.1614055114.
Che, Haihong, Goldstein, Melvyn L., Diamond, Patrick H., & Sagdeev, Roald Z. How electron two-stream instability drives cyclic Langmuir collapse and continuous coherent emission. United States. https://doi.org/10.1073/pnas.1614055114
Che, Haihong, Goldstein, Melvyn L., Diamond, Patrick H., and Sagdeev, Roald Z. Mon . "How electron two-stream instability drives cyclic Langmuir collapse and continuous coherent emission". United States. https://doi.org/10.1073/pnas.1614055114.
@article{osti_1341768,
title = {How electron two-stream instability drives cyclic Langmuir collapse and continuous coherent emission},
author = {Che, Haihong and Goldstein, Melvyn L. and Diamond, Patrick H. and Sagdeev, Roald Z.},
abstractNote = {Continuous plasma coherent emission is maintained by repetitive Langmuir collapse driven by the nonlinear evolution of a strong electron two-stream instability. The Langmuir waves are modulated by solitary waves in the linear stage and electrostatic whistler waves in the nonlinear stage. Modulational instability leads to Langmuir collapse and electron heating that fills in cavitons. The high pressure is released via excitation of a short-wavelength ion acoustic mode that is damped by electrons and reexcites small-scale Langmuir waves; this process closes a feedback loop that maintains the continuous coherent emission.},
doi = {10.1073/pnas.1614055114},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 7,
volume = 114,
place = {United States},
year = {Mon Jan 30 00:00:00 EST 2017},
month = {Mon Jan 30 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1073/pnas.1614055114

Citation Metrics:
Cited by: 24 works
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