Large-orbit coaxial-structure cyclotron autoresonance maser
Large-orbit coaxial-structure cyclotron autoresonance maser
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DOI：
10.1063/1.2166687
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发表时间：
2006-01
影响因子：
4
通讯作者：
Shi-Chang Zhang;M. Thumm
中科院分区：
文献类型：
--
作者：
Shi-Chang Zhang;M. Thumm
我们提出了一种大轨道同轴结构回旋自共振脉塞（CARM）的概念建议，其中射频结构是一个同轴波导或腔，大轨道电子束围绕同轴结构的轴线。色散分析和非线性仿真验证了该方法的可行性。大轨道同轴结构CARM有望在毫米波和亚毫米波范围内工作，具有高功率、低工作磁场和超高增益。研究发现，电子束的速度扩散大大降低了电磁谐振器的功率，但这种不利影响可以通过适当的轴向磁场锥度来抵消。
We present a conceptual proposal for a large-orbit coaxial-structure cyclotron autoresonance maser (CARM), wherein the rf structure is a coaxial waveguide or cavity and a large-orbit electron beam encircles the axis of the coaxial structure. Both dispersion analysis and nonlinear simulations demonstrate the feasibility of the proposal. The large-orbit coaxial-structure CARM could be expected to operate in millimeter and submillimeter wave ranges with high power, low operating magnetic field, and ultrahigh gain. It is found that electron-beam velocity spread substantially decreases the power of CARMs, but this adverse influence might be offset by a proper taper of the axial magnetic field.