Microwave beams imaging by recombination continuum of cesium emitted by the positive column of the Cs-Xe DC discharge

A uniform slab of dense plasma of the positive column of a Cs-Xe DC discharge was created under a xenon pressure of 15 torr. It was demonstrated that the blue recombination continuum of cesium emitted by the plasma slab can be used for real-time imaging of microwave beams.