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Vol. 158, Issue 11, November 2013, pp. 274-278

 

Bullet

 

Dispersion of Cherenkov Radiation by Electron Uniform Moving in Poloidal Magnetized Plasma
 
1, 2 Wei TIAN, 1 Shi-Xiu CHEN, 1 Ji-Xiong XIAO, 1 Fei GAI, 1 Kun CHEN

1 School of Electrical Engineering, Wuhan University, Wuhan 430072, Hubei, China

2 School of Computer Science, South-Central University for Nationalities, Wuhan 430074, Hubei, China

1 Tel.: 0086-13720297068

1 E-mail: victor-tian888@163.com

 

Received: 19 August 2013   /Accepted: 25 October 2013   /Published: 30 November 2013

Digital Sensors and Sensor Sysstems

 

Abstract: Research on radiation by electron bunch in poloidal magnetized plasma remains a longstanding challenge. Toward this objective, theoretical investigation and computer calculation on Cherenkov radiation by an electron bunch moving uniformly in Hermitian medium of poloidal magnetized plasma are presented in the paper. Through establishment of physical model of Hermitian medium, radiation mechanism is analyzed. Eigenvalue and radiation condition are obtained. Through analysis of eigenvalues, dispersion relation is derived. Through analysis of cyclotron frequency and plasma frequency affecting eigenvalue, it is found that p1 mode is only affected by plasma frequency, and p2 mode is affected by not only plasma frequency but also cyclotron frequency. Then dispersion curve are achieved by computer calculation. The theoretical analysis and calculation will provide for further research of the new type UWB microwave radiator.

 

Keywords: Cherenkov radiation, Poloidal magnetized plasma, Hermitian medium, Eigenvalue, Dispersion relation.

 

 

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