Production of S_2F_10, S_2OF_10, and S_2O_2F_10 by spark discharges in SF_6

摘要

Decomposition of SF_6 in electrical discharges has been the subject of extensive study and review over the past decade.~1-4 Because of toxicological concerns recent~5 research has focused on the formation of S_2F_10, an SF_6 byproduct of high toxicity.~6,7 As a result of a concerted effort to establish the formation of S_2F_10, an SF_6 in parctical systems the results of laboratory experiments~8,9 have shown that S_2F+10 is formed over a wide range of discharge conditions including power arc, corona, and spark discharges. In previous work in our laboratory the yeidl of S_2F_10 formaiton in SF_6 spark discharge experiments was measured by conventional gas chromatography with a sensitivty of only around 50 ppm, requiring the deposition of large amounts of energy (generally requiring) hundreds to thousands of sparks) into a small volume breakdown cell to develop large enough concentrations for detection.