Abstract

The properties of dimer and trimer emission following optical excitation of the cryogenic rare-gas-F₂ solutions Ar(F₂), Kr(F₂), Xe(F₂), N₂(F₂), Ar(Kr, F₂), Ar(Xe, F₂), and Kr(Xe, F₂) at 351, 248, and 193 nm are reported. Fluorescences corresponding to dimer [KrF^*(D_1/2 → X_1/2), XeF*(D_1/2 → X_1/2), XeF*(B_1/2 → X_1/2), XeF*(C_3/2 → A_3/2)] and trimer (Ar₂F*, Kr₂F*, Xe₂F*) transitions are detected. Concentration levels of 1 to 300 ppm, 2 to 220 ppm, and 250 to 1800 ppm were used for F₂, Kr, and Xe, respectively. Nearly all solutions investigated exhibited strong visually observable emissions in various dimer and trimer bands even at modest intensities (<10⁶ W/cm²) of excitation.

© 1984 Optical Society of America