Fig. 9. Output electron density (noutput) calculated from two resonance frequencies of 0.87 and 2.75 GHz over (a) the input electron density (ne,LDP) at a fixed ne,HDP value of 2.0 × 1011 cm−3 and (b) the input electron density (ne,HDP) at a fixed ne,LDP value of 5.0 × 109 cm−3.
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