Efficient solutions for low-temperature singlet-oxygen generators

Experimental investigations were made of the physicochemical characteristics of the active solutions for a chemical generator in an oxygen–iodine laser. A strong temperature dependence of the viscosity of the solution was observed. The influence of this factor on the operation of the singlet-oxygen generator and the laser is discussed. The cyclic operation of a laser with efficient neutralization of the reagents and the addition of an alkali is simulated. It is shown that hydrogen peroxide may be 50% utilized when the temperature of the solution is no higher than — 30 °C. A method of preparing a solution for an iodine laser with a low freezing point (between — 30 °C and — 40 °C) is developed. It is shown that an aqueous solution of hydrogen peroxide with a concentration of 25–40% is suitable.