No abstract

Iodine monofluoride, a promising visible chemical laser candidate, has been chemically produced at number densities exceeding 1×1015 molecules/cm3 in a supersonic flow. Combustion of nitric oxide and molecular fluorine produced atomic fluorine at an efficiency of 20%–30%, independent of flow conditions. The subsequent transonic reaction of atomic fluorine with molecular iodine to produce a stable flow of IF(X1Σ+) was mixing limited and complete within 10 μs. The low-pressure (3 Torr), low-temperature (300 K) flow environment should be suitable for lasing.

No abstract

Heterogeneous iodine cluster formation has been identified as the responsible factor resulting in large iodine titration requirements for Boeing's first high Mach number nitrogen ejector nozzle. A solution employing geometrically produced aerodynamic heating in the flow was envisioned to break up these clusters. Horizontal and vertical wire arrays (cluster busters) placed downstream of the nozzle exit plane (NEP) have been shown to significantly reduce the optimal iodine titration and to greatly improve the power extraction efficiency of the Chemical OxygenIodine Laser utilizing this first generation ejector nozzle.

No abstract