Demonstration of Marginal Stability Theory by a 200-kW Second-Harmonic Gyro-TWT Amplifier.
Demonstration of Marginal Stability Theory by a 200-kW Second-Harmonic Gyro-TWT Amplifier.
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DOI：
10.1103/physrevlett.75.4322
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发表时间：
1995-12
影响因子：
8.6
通讯作者：
Wang;McDermott;Luhmann
中科院分区：
文献类型：
--
作者：
Wang;McDermott;Luhmann
最近提出的一种实现高功率回旋行波放大器稳定性的理论得到了验证。通过保持相互作用长度小于竞争模的临界振荡长度，获得了稳定性。实验还验证了理论预测，即谐波回旋行波管可以产生更高的功率，因为它们的弱相互作用产生了更高的振荡阈值电子电流。二次谐波回旋行波管单级放大器稳定地产生207千瓦的功率，几乎是同等电压下基波回旋行波管输出功率的两倍。
A recent theory for achieving stability in high-power gyrotron traveling wave (gyro-TWT) amplifiers has been verified. By keeping the interaction length shorter than the critical oscillation length for the competing modes, stability was achieved. The experiment also verified the theoretical prediction that harmonic gyro-TWT's can produce higher power because their weaker interaction yields a higher threshold electron current for oscillation. The second-harmonic gyro-TWT single-stage amplifier stably generated 207 kW, nearly twice the level achieved by fundamental-harmonic gyro-TWT's at a comparable voltage.