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Jun WU (吴军), Jian WU (吴健), M T RIETVELD, I HAGGSTROM, Haisheng ZHAO (赵海生), Zhengwen XU (许正文). Altitude and intensity characteristics of parametric instability excited by an HF pump wave near the fifth electron harmonic[J]. Plasma Science and Technology, 2017, 19(12): 125303. DOI: 10.1088/2058-6272/aa9027
Citation: Jun WU (吴军), Jian WU (吴健), M T RIETVELD, I HAGGSTROM, Haisheng ZHAO (赵海生), Zhengwen XU (许正文). Altitude and intensity characteristics of parametric instability excited by an HF pump wave near the fifth electron harmonic[J]. Plasma Science and Technology, 2017, 19(12): 125303. DOI: 10.1088/2058-6272/aa9027

Altitude and intensity characteristics of parametric instability excited by an HF pump wave near the fifth electron harmonic

  • An ionospheric heating experiment involving an O mode pump wave was carried out at European Incoherent Scatter Scientific Association site in Tromsø. The observation of the ultra high frequency radar illustrates the systematic variations of the enhanced ion line and plasma line in altitude and intensity as a function of the pump frequency. The analysis shows that those altitude variations are due to the thermal effect, and the intensity variations of the enhanced ion line are dependent on whether or not the enhanced ion acoustic wave satisfy the Bragg condition of radar. Moreover, a prediction that if the enhancement in electron temperature is suppressed, those systematic variations will be absent, is given.
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