中国物理B ›› 2006, Vol. 15 ›› Issue (9): 2042-2045.doi: 10.1088/1009-1963/15/9/025
刘濮鲲1, 谢鸿全2
Xie Hong-Quan(谢鸿全)a) and Liu Pu-Kun(刘濮鲲)b)
摘要: A helix type slow wave structure filled with plasma is immersed in a strong longitudinal magnetic field. Taking into account the effect of the plasma and the dielectric, the system is separated radially into three regions. By means of the sheath model and Maxwell equation, the distribution of the electromagnetic field is established. Using the boundary conditions of each region, the dispersion relation of the slow wave structure is derived. The trend of change for the radial profile of the axial electric field is analysed respectively in different plasma densities, plasma column radius and dielectric constant by numerical computation. Some useful results are obtained on the basis of the discussion.
中图分类号: (Acoustical properties of liquids)