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《High Power Laser & Particle Beams》 2002-01
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Analysis of the dispersion on relativistic traveling wave tube

XIE Hong-quan, YAN Yang, LIU Sheng-gang (Institute of High Energy Electronics, UESTC of China, Chengdu, 610054,China)  
A cold and uniform plasma-filled traveling wave tube with sinusoidally corrugated slow wave structure is driven by a finite thick annular intense relativistic electron beam and the entire system is immersed in a strong longitudinal magnetic field. By means of the linear field theory, the dispersion relation for the traveling wave tube (RTWT) is derived. The dispersion characteristic of the RTWT is analyzed by numerical computation. The trend of the change for gain, bandwidth and center frequency of the RTWT is discussed in detail in different cases of various densities of plasma, transmission places of electron beam, voltages as well as currents. Some useful results are obtained on the basis of the discussion.
【Fund】: 国家自然科学基金 (项目 :行波管等离子体理论与实验研究 )资助课题
【CateGory Index】: TN124
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