This work is devoted to the study of the possibility of obtaining the highest O 2 (a 1 Δ g) yield
in ED SOG at the high absolute O 2 (a 1 Δ g) concentration needed for developing a
powerful oxygen–iodine laser pumped by electric discharge. A singlet oxygen was produced
in a transversal rf discharge in the pressure range 10–30 Torr of pure oxygen in the small-
diameter (7 mm) quartz tube with HgO coating of the inner walls for removing atomic oxygen
to eliminate fast O 2 (a 1 Δ g) quenching. It is shown that pd scaling (p—pressure, d—tube …

This work is devoted to the experimental and theoretical study of rf frequency influence on
the discharge structure and the O 2 (a 1 Δ g) yield in a rf discharge in the tubes with HgO
coating for removing atomic oxygen to avoid fast O 2 (a 1 Δ g) quenching. Two series of
experiments were carried in two discharge sets up: 1-tube of large diameter of 14 mm,
electrode length of 30 cm; 2-tube of small diameter of 7 mm, electrode length of 10 cm. In the
first series, the increase of rf frequency from 13.56 MHz to 81 MHz resulted in the singlet …