Laboratory reproduction of Arecibo experimental results: HF wave-enhanced Langmuir waves

M. C. Lee, R. J. Riddolls, K. D. Vilece, N. E. Dalrymple, M. J. Rowlands, D. T. Moriarty, K. M. Groves, M. P. Sulzer, S. P. Kuo

Research output: Contribution to journalArticlepeer-review


Laboratory experiments at MIT using the Versatile Toroidal Facility (VTF) have produced "cascading" and "frequency-upshifted" spectra of HF wave-enhanced Langmuir waves resembling the spectra observed in Arecibo experiments. The VTF experiments are well-explained using the source mechanism proposed by Kuo and Lee [1992] to interpret observed Langmuir wave spectra at Arecibo, Puerto Rico. This mechanism is referred to as a nonlinear scattering of parametric decay instability (PDI)-excited Langmuir waves by "pre-existing" lower hybrid waves to preferentially produce anti-Stokes (i.e., frequency-upshifted) Langmuir waves. Recent radar spectral observations of anti-Stokes Langmuir waves at Arecibo with improved range and time resolution [Sulzer and Fejer, 1994] can be reasonably understood in terms of this mechanism.

Original languageEnglish (US)
Pages (from-to)115-118
Number of pages4
JournalGeophysical Research Letters
Issue number2
StatePublished - 1997

ASJC Scopus subject areas

  • Geophysics
  • General Earth and Planetary Sciences


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