Abstract

The noise amplitude spectra of a "Surfatron" microwave-induced plasma have been characterized. These are found to be similar to the noise amplitude spectra of conventional microwave plasmas sustained in TM₀₁₀ cavities. Interference noises due to power line pickup and low-frequency 1/f noise extending to approximately 1 Hz are the major features observed on a largely white noise amplitude spectrum. The features observed in the noise amplitude spectra correlate well with the noise features in optical spectra of the source acquired by Fourier transform spectroscopy.

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