Modeling of the chemical generation of atomic iodine in a chemical oxygen-iodine laser

Abstract

The mathematical modeling of reaction systems for chemical generation of atomic iodine is presented. This process can be applied in the chemical oxygen-iodine laser (COIL), where it can save a substantial part of energy of singlet oxygen and so increase the laser output power. The parametric study of the production of atomic fluorine and subsequently atomic iodine in dependence on the pressure and dilution with inert gas was made. The calculation of the interaction between produced atomic iodine and singlet oxygen was made with four different mixing/reacting schemes.

Contribution of the COIL Laboratory in Prague to the chemical oxygen-iodine laser research and development

“…A detailed description of results on the 1-D modeling of both reaction paths for chemical generation of atomic iodine, and their interpretation were partly published 3°" ', and some advanced results can be found in the paper of this Proceedings. 32 A more sophisticated estimation of optimal conditions for I atoms generation needs the 2-D or 3-D modeling, involving also the fluid dynamics effects. This work is planned for a near future.…”

CFD modeling of an instantaneous generation of atomic iodine in chemical oxygen-iodine laser

“…First, chlorine atoms are produced in a very fast reaction of chlorine dioxide with nitrogen oxide in an overall reaction (consisted, in fact by a chain-branching reaction system including several steps1) do2 + 2N0 -2NO2 + Cl . (1) In the next step, iodine atoms are generated by the fast exothermic reaction1 ofthe Cl atoms with hydrogen iodide Cl + HI -+ I + HC1 (HC1*) . (2) In the existing laser device3, the I generation is realized by the subsequent injection ofNO and HI into the flow ofHe, N2 and dO2.…”

Chemical oxygen-iodine laser with a new method of atomic iodine generation

“…The method is based on the fast chemical reactions of hydrogen iodide with atomic fluorine or chlorine that are produced also chemically. 3,4 The process via atomic chlorine was studied also experimentally in two types of small-scale reactors.…”