Removal of water vapor content in singlet oxygen flow using cold-jet method

To improve the performances of chemical oxygen iodine laser (COIL), experiments were done for the removal of water vapor content in singlet oxygen gas flows by using -117 ℃ ethanol (C2H5OH), -110 ℃ freon (CCI3F) and -45 ℃,50% hydrogen peroxide (H2O2) cold jets respectively. Experimental results show that dehydration effects of the three cold jets are not so remarkable: C2H5OH has scarcely any dehydration effect, and CCI3F and H2O2 can only reduce water vapor contents to about 1/5 and 1/4 of the initial values respectively. C2H5OH and CCI3F are so readily volatilized that they would produce severe interference in the gas flows and are not applicable to the removal of water vapor. Only the nonvolatile H2O2 is the suitable candidate.