Idehara, T., et al., High-Speed Frequency Modulation of a 460-GHz Gyrotron for Enhancement of 700-MHz DNP-NMR Spectroscopy. J Infrared Milli Terahz Waves, 2015: p. 1-11.
<div style="text-align: justify;">The high-speed frequency modulation of a 460-GHz Gyrotron FU CW GVI (the official name in Osaka University is Gyrotron FU CW GOI) was achieved by modulation of acceleration voltage of beam electrons. The modulation speed fm can be increased up to 10 kHz without decreasing the modulation amplitude ?f of frequency. The amplitude ?f was increased almost linearly with the modulation amplitude of acceleration voltage ?Va. At the ?Va=1 kV, frequency spectrum width df was 50 MHz in the case of fm
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High-Speed Frequency Modulation of a 460-GHz Gyrotron for Enhancement of 700-MHz DNP-NMR Spectroscopy
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