Journal article
Beat-type Langmuir wave emissions associated with a type III solar radio burst: Evidence of parametric decay
Geophysical research letters, Vol.22(10), pp.1161-1164
05/15/1995
DOI: 10.1029/95GL00303
Abstract
Recent measurements from the plasma wave instrument on the Galileo spacecraft have shown that Langmuir waves observed in conjunction with a type III solar radio burst contain many beat-type waveforms, with beat frequencies ranging from about 150 to 650 Hz. Strong evidence exists that the beat pattern is produced by two closely spaced narrowband components. The most likely candidates for these two waves are a beam-generated Langmuir wave and an oppositely propagating Langmuir wave produced by parametric decay. In the parametric decay process, nonlinear interactions cause the beam-driven Langmuir wave to decay into a Langmuir wave and a low-frequency ion sound wave. Comparisons of the observed beat frequency are in good agreement with theoretical predictions for a three-wave parametric decay process. Weak low-frequency emissions are also sometimes observed at the predicted frequency of the ion sound wave.
Details
- Title: Subtitle
- Beat-type Langmuir wave emissions associated with a type III solar radio burst: Evidence of parametric decay
- Creators
- G. B. Hospodarsky - University of IowaD. A. Gurnett - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Geophysical research letters, Vol.22(10), pp.1161-1164
- DOI
- 10.1029/95GL00303
- ISSN
- 0094-8276
- eISSN
- 1944-8007
- Language
- English
- Date published
- 05/15/1995
- Description audience
- PUBLIC
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984455659502771
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