Solitons and Second Harmonic Radiation in Type III Bursts.
NAVAL RESEARCH LAB WASHINGTON D C
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The emission at the second harmonic radiation 2 omega sub e from self consistent Langmuir solitons is calculated. THe theory predicts, in a natural way, the observed transition in type III bursts from the region where the radio intensity is linearly proportional to the electron flux to the region where the radio intensity is proportional o the square of the elctron flux. A detailed comparison of the radiation observed at 2 omega sub e for the burst of 31 March 1976, 1810 UT with the one expected on the assumption of radiation from solitons, using the correlated in situ measurements of electric fields at omege sub e and their spatial spatial structure provides strong evidence that for the first time, Langmuir solitons have been observed in space.