%0 Journal Article
%T Study of space charge field based on sheath helix model of TWTS<br>基于行波管螺旋导电面模型的空间电荷场研究
%A Xiao Liu
%A Su Xiao-Bao
%A Liu Pu-Kun
%A <br>肖 刘
%A 苏小保
%A 刘濮鲲
%J 物理学报
%D 2006
%I 
%X The electromagnetic field of helix TWTs in the sheath model is analyzed. The dispersion and coupling impedance equations are derived and the one-dimensional space charge reduction factor is discussed in detail. The study shows that the difference of the space charge reduction factor between the sheath model and the perfect conducting tube is small at high frequency. The difference can be interpreted as the effect of the sheath helix. The higher frequency electromagnetic field has greater ability to affect the e-beam. Therefore, the space charge reduction factor equation based on the sheath helix model is inappropriate at high frequency.
%K TWT
%K nonlinearity
%K sheath helix
%K space charge reduction factor
%K dispersion
%K coupling impedance<br>行波管
%K 非线性
%K 螺旋导电面
%K 空间电荷降低因子
%K 色散
%K 耦合阻抗
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6e709dc38fa1d09a4b578dd0906875b5b44d4d294832bb8e&cid=47ea7cfddebb28e0&jid=29df2cb55ef687e7efa80dfd4b978260&aid=d4789ef73fcefc3f&yid=37904dc365dd7266&vid=e514ee58e0e50ecf&iid=f3090ae9b60b7ed1&sid=7caf5f76a8590236&eid=a7923fb5934e4ef0&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=14