Space-Charge-Limiting Current of a Relativistic Electron Beam Propagating in a Rippled- Wall Waveguide

Chin. Phys. Lett.

2000, Vol. 17

Issue (3): 212-214 DOI:

Original Articles

Space-Charge-Limiting Current of a Relativistic Electron Beam Propagating in a Rippled- Wall Waveguide

QIAN Bao-Liang¹;LEI Yin-Zhao²;LIU Yong-Gui¹;LI Chuan-Lu¹

¹Department of Applied Physics, National University of Defense Technology, Changsha 410073 ²Center for Electromagnetics Research, Zhengzhou University of Technology, Zhengzhou 450002

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QIAN Bao-Liang, LEI Yin-Zhao, LIU Yong-Gui et al 2000 Chin. Phys. Lett. 17 212-214

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Abstract A fluid model is used to derive the space-charge-limiting current of a relativistic electron beam drifting in a rippled-wall cylindrical waveguide. It is found that an enhancement of the space-charge-limiting current is found as long as optimum values of the ripple wavelength and amplitude are chosen. However, a very small ripple wavelength of the waveguide may reduce the space-charge-limiting current rapidly. The result should be of interest to the operation of backward-wave oscillators.

Keywords: 52.60.+h 52.25.Wz 41.75.-i

Published: 01 March 2000

PACS:	52.60.+h
	52.25.Wz
	41.75.-i	(Charged-particle beams)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2000/V17/I3/0212

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	QIAN Bao-Liang
	LEI Yin-Zhao
	LIU Yong-Gui
	LI Chuan-Lu

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