Broadening of Microwave Absorption Lines Due to Wall Collisions

作者：Michael Danos, Stanley Geschwind · 发表于：Physical Review · 年份：1953 · DOI：10.1103/physrev.91.1159 · 被引用次数：59 · 研究领域：Gyrotron and Vacuum Electronics Research、Microwave and Dielectric Measurement Techniques

The broadening of microwave absorption lines due to wall collisions is calculated using a method introduced by Johnson and Strandberg. Two types of absorption cell are studied, i.e., infinite plane parallel plates and a circular cylinder, each in a region of uniform microwave field. The usual assumption that the half-power half-width is given by $\ensuremath{\Delta}\ensuremath{\nu}=\frac{1}{2\ensuremath{\pi}\ensuremath{\tau}}$, where $\ensuremath{\tau}$ is the mean time between collisions is in good agreement with the detailed calculations of the present work which show that the error in the line width as calculated by the above expression is not larger than 30 percent. Experimentally observed line widths agree with the predicted values.