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Phase locking of high power relativistic backward wave oscillator using priming effect

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11 Author(s)
Teng, Yan ; Northwest Institute of Nuclear Technology, Xi’an 710024, China ; Wei Song ; Jun Sun ; Xiao, Renzhen
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The phase-locking approach using the priming effect is developed for high power relativistic backward wave oscillators (RBWO). A plasma switch is conceived to avoid the feedback effect. In experiment, multicavity RBWO of 200 MW with the 73 MHz half power bandwidth is phase-locked under the injection power ratio 0.044 for the frequency separation of 20 MHz. We found that it takes more time to reach stable phase-locking than to achieve saturation of RBWO generation. The external signal of higher power results in the longer time duration of phase locking. Besides phase-locking, the priming effect leads to longer microwave pulse duration.

Published in:

Journal of Applied Physics  (Volume:111 ,  Issue: 4 )

Date of Publication:

Feb 2012

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