A comparison of photolytic fluorine-atom sources for chemical laser studies

✍ Scribed by M.J. Berry

• Publisher: Elsevier Science
• Year: 1972
• Tongue: English
• Weight: 528 KB
• Volume: 15
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(72)80166-0

✦ Synopsis

VF6, CF31, CF?=CFCI, and CF2=CFBr have been used as photolytic fluorine-atam sources to study ttie F+Hz chemical faser under identical apparatus and sample conditions. From a comparison of the observed MF laser transitions and from other esperimenk, WFe and. by implication, many other previously used fluorine-atom sources appear to be unsuitable for quantitative chemical iascr studies of reaction energy partitioning. In contrast, CF3i. CFc=CFCI, and CFz=CFBr may be highly suitable for quantitative studies. I'he F+H, chemical laser was discovered by Kompa and Pienteiin 196'7 [l] _ They initiated this chemical reaction by flash photolysis of premixed UF,/H, arid SbF, /Hz samples. In successive. papers i?-, 3] , Pimentel and co-workers optimized UF,/H, and other Iaser systems, cufminating f3J in the first quantitative ~fo~3tion on energy ~artition~g into the products of the F+Hz, F-i-D2, F+CH,, and F-t-CD, reactions. Following these initial studies, Polanyi and coworkers [4, 51 and Jonathan and co-workers [6, 71 studied the IR chem~urn~es~e~ce ofF+H,, F-i-D,, and F+CH, reaction products. Lee and co-workers