High-frequency ion electrostatic instabilities in mixed warm-cold plasma

L. Gomberoff, S. Cuperman

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


It is shown that an ion loss cone distribution function with m ⩾ 1 becomes unstable against electrostatic waves with w ≫ Qp and ka = 0 in the presence of a cold plasma population, in contrast with pure warm systems, which require m=3 for instability. This result is an extension to high frequencies, <w=Qp, of similar conclusions reached by Pearlstein et al. (1966) andFarr&Budwine (1968), for w-values equal to the first few harmonics of the proton gyrofrequency.

Original languageEnglish
Pages (from-to)325-333
Number of pages9
JournalJournal of Plasma Physics
Issue number3
StatePublished - Jun 1976


FundersFunder number
United States-Israel Binational Science Foundation


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