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物理学报. 2003, 52(4): 914-919.
doi: 10.7498/aps.52.914.
等离子体加载螺旋线行波管特性研究
- 收稿日期: 2002-02-06
- 修回日期: 2002-07-09
- 刊出日期: 2003-02-05
English Abstract
Study on characteristics of helix-type traveling wave tube filled with plasma
- Received Date:
06 February 2002
- Accepted Date:
09 July 2002
- Published Online:
05 February 2003
Abstract: A helix-type slow wave structure filled partially with plasma is immersed in a strong longitudinal magnetic field.By means of sheath model and linear field theory，the dispersion relation of the slow wave structure is derived. Hybrid modes which are formed at frequencies at which the phase velocities of electromagnetic and electrostatic waves coincide are found.The trend of change for disperstion characteristic,interaction impedance and gain is analyzed in detail in the cases of various densities of plasma and filling radius by numerical computation. Some useful results are obtained on the basis of the discussion.
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Keywords:
- helix type traveling wave tube /
- Plasma /
- Hybrid modes
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