The study of singlet oxygen (1O2) emission showed that the 1O2 could be efficiently produced in the reaction of solid potassium superoxide (KO2) particles with chlorine gas (Cl2), which only occurred on the surface of solid KO2 particles. The liquid water may accelerate the reaction of Cl2 with KO2 and make a complete conversion of KO2 to 1O2. The KO2 had a similar efficiency for 1O2 production as the alkali metal peroxides (such as Li2O2 and Na2O2) as reacting with Cl2.
A multikilowatt chemical oxygen-iodine laser (COIL) using molecular iodine generated chemically as the iodine source was developed and tested. The COIL, with a gain length of 26.5cm, was energized by a square pipe-array jet singlet oxygen generator (JSOG), with a nozzle bank having a designed Mach number of 2.5. The JSOG, operating without a primary buffer gas, has a much better operation stability during basic hydrogen peroxide pumping circulations. Iodine injectors/nozzles made of polyimide were used. An output power of 7.8kW and a chemical efficiency of 24.5% were achieved with a chlorine flow rate of 353mmole∕s.
The decay dynamics of 2-aminopyridine and 3-aminopyridine excited to the S¬1 state is investigated using femtosecond time-resolved photoelectron imaging technique. The lifetime of the S1 state for both molecules shows...
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