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Showing 1 to 5 of 5 for “"Parametric decay instability (PDI)"”.
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Investigations of the cascade of Langmuir wave turbulence over HAARP Observatory in Gakona, Alaska
… from Langmuir wave turbulence as a result of Parametric Decay Instability (PDI) in the ionosphere. This effect is studied using a high-frequency (HF) heater located at the NSF/DoD High Frequency Active Auroral Research Program (HAARP) Observatory in Gakona, Alaska. Measurements were taken …
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Excitation of Langmuir wave turbulence in high-frequency (HF) pump waves over Gakona, Alaska
… of Langmuir wave turbulence caused by the parametric decay instability (PDI) in high-frequency space plasma heating experiments conducted at the NSF/DoD High Frequency Active Auroral Research Program (HAARP) facility in Gakona, Alaska during the spring and summer of 2006. The PDI is the …
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Detection of lower hybrid waves at the plasma edge of a diverted tokamak
… to density-dependent non-linear effects, such as parametric decay instability (PDI) above the line-averaged density of 1 x 10²⁰ m-³, using the probes installed on the launcher, outer divertor, and inner wall. Ion cyclotron PDI is found to be excited above line-averaged densities of 1 x 10²⁰ m -³, …
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Analysis of Plasma Wave Irregularities Generated during Active Experiments in Near-Earth Space Environment
… field. The first is a shear-driven plasma instability due to inhomogeneities in the boundary layer between the injected charged dust layer and the background plasma. This begins to appear at very early times once the dust is released into the space plasma, which is of the order or less than …
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Study of Narrow-Band Spectral Characteristics of Stimulated Electromagnetic Emission (SEE) During Second Electron Gyro-Harmonic Heating
… similar spectral bandwidth named ion acoustic parametric decay (IAPD). A theoretical model is provided that interprets these spectral features as resulting from parametric decay instabilities in which the pump field ultimately decays into high frequency upper hybrid/electron Bernstein and low …