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2024 | OriginalPaper | Buchkapitel

5. Experimental Studies of Microwave Discharge Induced by Gyrotron

verfasst von : Masafumi Fukunari

Erschienen in: Beamed-mobility Engineering

Verlag: Springer Nature Singapore

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Abstract

This chapter comprehensively reviews experimental investigations on gyrotron-induced microwave discharges and associated theories, comparing over-critical and under-critical conditions. Simple calculation models of the ionization threshold that separates over-critical and under-critical conditions are explained, and specific calculation examples are given. Filamentary structures of the induced plasma in over-critical and under-critical conditions are discussed with high-speed camera images. The study underscores the need for experiments on the ionization front’s propagation velocity in various incident beam frequencies for assessing microwave rocket’s thrust performance. Investigations also reveal limitations imposed by the transition from nonequilibrium to equilibrium discharge in the focusing optics of the incident beams and abnormal ignitions due to residual plasma.

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Titel: Experimental Studies of Microwave Discharge Induced by Gyrotron
verfasst von: Masafumi Fukunari
Verlag: Springer Nature Singapore
Buch: Beamed-mobility Engineering
Print ISBN: 978-981-9946-17-4

Electronic ISBN: 978-981-9946-18-1

Copyright-Jahr: 2024
DOI: https://doi.org/10.1007/978-981-99-4618-1_5