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Abstract:
Energy transfer reactions that could potentially limit scaling of the electric oxygen iodine laser (EOIL) were examined. Quenching of excited iodine atoms (I*) by atomic oxygen has been identified as a significant energy loss channel. The rate constant for this process was characterized over the temperature range from 295 to 360 K. Quenching of singlet oxygen (02(a)) in moderate pressure discharges is a process that exhibits a non-linear pressure dependence. The reactions responsible for this behavior have been probed by examining the deactivation of02(a) in the presence of 02(X) and 0 atoms. Rapid quenching was observed when both 02(X) and 0 were present, suggestive of a three-body process. However, a detailed kinetic analysis indicates that a reaction product (possibly vibrationally excited ozone) is the primary quenching agent. Detailed models of the post-discharge kinetics ofEOIL were formulated and explored. The relative importance for various energy loss processes was evaluated, and weaknesses in the existing rate constant database were identified.
| Limitations: |
 APPROVED FOR PUBLIC RELEASE |
| Description: |
Final rept. Sep 2007-Aug 2009 |
| Pages: |
18 |
| Report Date: |
03 Sep 2009 |
| Contract Number: |
FA9550-07-1-0529 |
| Report Number: |
A364265 |
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