摘要
用单粒子理论研究了契伦柯夫自由电子激光的基本性质,给出了空心束圆柱衬介质波导契伦柯夫自由电子激光调谐特性,导出了增长率表达式,计算了克服谐振腔损失所需阈值电流和相互作用效率,讨论了束与介质间间隙的影响,并对空心束与实心束进行了比较,最后讨论了电子束品质对契伦柯夫自由电子激光的影响。
A single-particle model is used to investigate Cerenkov free electron laser with annular relativistic electron beams contained in dielectric-loaded cylindrical waveguides. Frequency tunabiliy is discussed and growth rate is derived. The threshold current for overcoming the cavity losses is calculated. Results show that the gap between the beam and the dielectric can degrade the beam-mode coupling .The growth rate for an annular beam may be higher than that for a solid beam.
出处
《强激光与粒子束》
EI
CAS
CSCD
1991年第2期147-154,共8页
High Power Laser and Particle Beams
关键词
自由电子激光
单粒子理论
Cerenkov free electron laser, relativistic electron beam, threshold current
