Dispersion of cherenkov radiation by electron uniform moving in poloidal magnetized plasma

作者：Tian Wei; Chen Shi Xiu; Xiao Ji Xiong; Gai Fei; Chen Kun

来源：Sensors and Transducers, 2013, 158(11): 274-278.

• Cherenkov radiations
• Dispersion relations
• Eigen-value
• Hermitians
• Magnetized plasmas

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.

• 出版日期2013