Optimized performance of a powerful hollow-cathode rf oscillator

Autor:	Joshua Felsteiner, S. Ish-Shalom, Ya. Z. Slutsker
Rok vydání:	1998
Předmět:	business.industry Chemistry RF power amplifier Vacuum tube Analytical chemistry General Physics and Astronomy Pulse duration Internal resistance Cathode RF probe law.invention law Optoelectronics Cold cathode business DC bias
Zdroj:	Journal of Applied Physics. 83:2940-2943
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.367082
Popis:	We have studied the power, efficiency, and frequency ranges achievable for a hollow-cathode based rf oscillator. We have found that the rf component of the discharge current can be much larger (up to ∼4.5 times) than its dc component. In the achievable frequency range of 15–120 MHz, this very simple cold cathode device produces up to 40 kW of rf power with efficiency of up to 25%. The internal resistance of this device always remained within a convenient range of 20–40 Ω. The rf pulse duration could be prolonged up to tens of μs. The physical processes governing the oscillator parameters are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::52fb27fba40569240b23f1eb9dde5119 https://doi.org/10.1063/1.367082 Zobrazit plný text záznamu