Optical Determination of Cs Ground-State Depletion in Cs–Ar Low-Pressure Discharges. II. Radial and Axial Cs-Atom Distributions

Abstract

The radial and axial distributions of Cs ground‐state (6²S_1/2) atoms in Cs–Ar low‐pressure discharges are studied by absorption spectroscopy. The results show that there is appreciable Cs‐atom depletion at the center of the discharge. Within experimental accuracy the Cs(6²S_1/2) concentration is found to be constant over the whole length of the positive column of the discharge.