Research & Teaching Faculty

Default Header Image

No "delayed" muonium-formation in organic liquids

TitleNo "delayed" muonium-formation in organic liquids
Publication TypeJournal Article
Year of Publication2003
AuthorsWalker, DC, Karolczak, S, Porter, GB, Gillis, HA
JournalJournal of Chemical Physics
Volume118
Pagination3233-3236
Date PublishedFeb
Type of ArticleArticle
ISBN Number0021-9606
KeywordsELECTRONS, HYDROCARBONS
Abstract

Studies of the yields of muonium atoms and diamagnetic-species in hexane in the presence of added scavengers have shown, unequivocally, that muonium is not formed by the "delayed" (microsecond) mechanism proposed recently. Instead, the lifetimes evaluated show that if the combination reaction of mu(+)+e(-)–>Mu contributes to muonium formation in "chemically active" liquids, then it is complete within <10(-10) s. In fact the results are consistent only with the "hot" model, in which the initial distribution of muons between muonium atoms and diamagnetic molecules is determined at the epithermal level, as the last step of the muon’s charge-exchangecycles and thermalization. (C) 2003 American Institute of Physics.

URL<Go to ISI>://000180702500029