Microwave propagation through modulated air plasma |
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Authors: | S K Varshney M Sakuntala |
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Institution: | (1) Department of Physics, Shri Varshney College, 202 001 Aligarh;(2) Department of Physics, Banaras Hindu University, 221 005 Varanasi |
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Abstract: | When a microwave propagates through a plasma in which electron density and electron collision frequency periodically vary,
the propagating wave is modulated in amplitude and phase. An approximate theory is derived to suit the laboratory experimental
conditions. Introducing the amplitude and phase difference, the dependence of electron density and electron collision frequency
has been derived for different radio frequency modulation and frequency parameter. A scanning double probe technique is used
to measure the exact time variation in the plasma parameters at any fixed position during a single cycle of the applied field.
Theoretical values agree with those of experiment. |
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Keywords: | Plasma microwave scanning probe modulation |
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