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The Third Harmonic in Solar Radio Bursts
1974
Symposium - International astronomical union
Preserved Fulltext
Generation of third harmonic plasma emission by coalescence of second harmonic radiation with a plasma wave is more favourable than by direct coalescence of three plasma waves. The predicted ratio of the intensities at the third (III) and second (II) harmonics isIIIIω/IIIω~ ωLWlL/Nmc3, where ωLis the plasma frequency,Wlis the energy density in plasma waves,Lthe linear dimensions of the source andNthe ambient electron number density. The intensity at the second harmonic iswhereLN(∼1010cm at ωL∼
doi:10.1017/s0074180900234360
fatcat:hybbvkr4z5davigltuvqaxpre4