Effects of the Collisional Damping on a Nonresonant Parametric Instability Near the Lower-Hybrid Frequency

Hiroshi Fujiyama, Masanori Akazaki, Yukio Watanabe

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It is experimentally verified that the dominant region of the nonresonant ion-quasimode is 1ω0LH0: pump frequency, ωLH: lower-hybrid frequency), by controlling the linear Landau damping and the collisional damping of the parametric decay waves by varying neutral gas pressure, and this ion-quasimode have the maximum amplitude at the ratio [formula omitted]. The measured frequency, amplitude, and threshold of the low frequency decay wave are in good agreement with the Porkolab's theory of the nonresonant ion-quasimode including the effect of electron-neutral collisions.

Original languageEnglish
Pages (from-to)1981-1987
Number of pages7
Journaljournal of the physical society of japan
Issue number5
Publication statusPublished - Jan 1 1980


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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