关于改型斜旋转轴对称准光腔自由电子微波激射器的一个注记

Addendum to the Study of Free Electron Maser with Modified Axisymmetrical Quasioptical Cavity of Oblique Rotation

对作者先前在改型斜旋转轴对称准光腔（ＭＡＱＣＯＲ）自由电子微波激射器方面的工作作一补充，说明改型斜旋转轴对称准光腔回旋微波激射器还有一个重要的优点。

The authors previous work on free electron maser with modified axisymmetrical quasioptical cavity of oblique rotation (MAQCOR) is supplemented. The present result shows that the electron cyclotron maser with MAQCOR has an additional advantage, that is the deleterious effect of electron beam thermal spread on beam wave interaction can be minimized by choosing the rotating angle appropriately.