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Ion heating by waves with frequencies below the ion gyrofrequency
Author(s) -
Temerin M.,
Roth I.
Publication year - 1986
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl013i011p01109
Subject(s) - ion , gyroradius , physics , atomic physics , coupling (piping) , computational physics , geophysics , materials science , metallurgy , quantum mechanics
Waves with frequencies satisfying ω 1 + ω 2 = Ω can heat ions. In this nonlinear interaction mechanism, coupling of a wave with frequency ω 1 and an ion trajectory, distorted by a wave with frequency ω 2 , results in a force varying at the gyrofrequency Ω at the ion position. The heating rate, verified by test particle calculations, is found for both broadband and coherent waves in the small gyroradius limit and is applied to ion conics above the auroral zone. This heating mechanism may be significant in other geophysical and astrophysical environments.