Abstract
EARLY forms of the arc harmonic generator have already been described1–3. The basis of these was a ‘cold cathode’ arc running between a mercury (or calcium) cathode and a tungsten wire anode in argon gas at high pressure. The arc was maintained by the combined action of a direct current field and a microwave field, the rectifying action of the arc ‘cathode spot’ producing harmonics of the microwave drive.
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References
Froome, K. D., Nature, 184, 808 (1959).
Froome, K. D., Nature, 186, 959 (1960).
Froome, K. D., Nature, 188, 43 (1960).
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FROOME, K. Microwave Harmonic Generator capable of Frequencies in Excess of 600 Gc./s.. Nature 193, 1169–1170 (1962). https://doi.org/10.1038/1931169b0
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DOI: https://doi.org/10.1038/1931169b0
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