Numerical simulation of a Gyro-BWO with a helically corrugated interaction region, cusp electron gun and depressed collector
Numerical simulation of a Gyro-BWO with a helically corrugated interaction region, cusp electron gun and depressed collector
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DOI：
10.5772/1828
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发表时间：
2011-09
期刊：
影响因子：
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通讯作者：
Wenlong He;C. Donaldson;Liang Zhang;K. Ronald;A. Phelps;A. Cross
中科院分区：
文献类型：
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作者：
Wenlong He;C. Donaldson;Liang Zhang;K. Ronald;A. Phelps;A. Cross
回旋返波振荡器（gyro-BWO）是一种频率可调谐的高功率相干辐射源，其辐射范围可达太赫兹。由于其在遥感、医学成像、等离子体加热和光谱学等领域的潜在应用，近年来引起了人们极大的研究兴趣。采用螺旋波纹互作用区（HCIR）的回旋返波管与传统的光腔回旋返波管相比，具有更宽的频率调谐范围和更高的效率。这是由于在HCIR中存在一个“理想”本征波，当轴向波数较小时，HCIR具有较大的恒定群速度。
The gyrotron backward wave oscillator (gyro-BWO) is an efficient source of frequency-tunable high-power coherent radiation in the microwave to the terahertz range. It has attracted significant research interest recently due to its potential applications in many areas such as remote sensing, medical imaging, plasma heating and spectroscopy. A gyro-BWO using a helically corrugated interaction region (HCIR) has achieved an even wider frequency tuning range and higher efficiency compared with a conventional gyro-BWO with a smooth-bore cavity. This is due to the existence of an “ideal”eigenwave in the HCIR with a large and constant group velocity when the axial wave number is small.