Accession Number : ADA191409

Title :   Observation of Nonlinear Wave Decay Processes in the Solar Wind by the AMPTE IRM Plasma Wave Experiment.

Descriptive Note : Technical rept.,

Corporate Author : AEROSPACE CORP EL SEGUNDO CA SPACE SCIENCES LAB

Personal Author(s) : Koons, H C ; Roeder, J L ; Bauer, O H ; Haerendel, G ; Treumann, R

PDF Url : ADA191409

Report Date : 05 Feb 1988

Pagination or Media Count : 30

Abstract : Nonlinear wave decay processes have been detected in the solar wind by the plasma wave experiment aboard the AMPTE-IRM spacecraft. The main process is generation of ultra-low-frequency ion-acoustic waves from the decay of Langmuir waves near the electron plasma frequency. Frequently this is accomplished by an enhancement of emissions near twice the plasma frequency. This enhancement is most likely due to the generation of electromagnetic waves from the coalescence of two Langmuir waves. These processes occur within the electron foreshock in front of the earth's bow shock. Keywords: Plasma frequency; Langmuir waves; Ion acoustic wave.

Descriptors :   *PLASMA WAVES, *SOLAR WIND, ACOUSTIC WAVES, BOW SHOCK, COALESCENCE, DECAY, EARTH(PLANET), ELECTRONS, EMISSION, IONS, LANGMUIR PROBES, NONLINEAR SYSTEMS, OPTIMIZATION, PLASMAS(PHYSICS), WAVES, AUTOMATIC GAIN CONTROL, ULTRALOW FREQUENCY, S BAND, SCIENTIFIC SATELLITES

Subject Categories : Astrophysics
      Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE