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Proton cyclotron echoes at 3ƒ H and 4ƒ H resonances
Author(s) -
Chen G. M.,
Horita R. E.
Publication year - 1991
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/90rs01543
Subject(s) - cyclotron , physics , proton , electron , atomic physics , dipole , cyclotron resonance , harmonics , cyclotron radiation , nuclear physics , quantum mechanics , voltage
A new class of proton cyclotron echoes observed on topside sounder ionograms is presented; these echoes occur at frequencies above the electron plasma frequency and at the third and fourth harmonics of the electron cyclotron frequency, 3ƒ H and 4ƒ H . Some features are noted such as the dependence on low dip angle values. It is suggested that the 3ƒ H and 4ƒ H proton cyclotron echoes may be generated by wave‐particle interaction between the electrostatic waves and the protons that are both energized by the dipole antenna on Alouette II, ISIS I, or ISIS II.