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    National Tsing Hua University Institutional Repository > 理學院 > 物理系 > 期刊論文 >  Absolute instability competition and suppression in a millimeter-wave gyrotron traveling-wave tube

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/54346

    Title: Absolute instability competition and suppression in a millimeter-wave gyrotron traveling-wave tube
    Authors: Barnett, L.R.;Lung Hai Chang;Han Ying Chen;Kwo Ray Chu;Wai Keung Lau;Chuan Cheng Tu
    教師: 朱國瑞
    Date: 1989
    Publisher: American Physical Society
    Relation: PHYSICAL REVIEW LETTERS, American Physical Society, Volume 63, Issue 10, SEP 4 1989, Pages 1062-1065
    Keywords: frequency stability
    Abstract: Harmonic absolute instability in the TE21 mode is found to cause mode competition in a new millimeter-wave gyrotron traveling-wave tube experiment designed for high stability in the TE11 mode. Complete suppression of this instability by the application of the TE11 drive has been observed with beam currents up to at least 6 times the instability threshold, which results in high amplified power (~25 kW) at high efficiency (~23%). The study is significant in that it demonstrates that cyclotron-maser amplifiers may operate at a current well above oscillation threshold without degradation in saturated performance
    URI: http://www.aps.org/
    Appears in Collections:[物理系] 期刊論文

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