Research & Teaching Faculty

Default Header Image

MUONIUM ATOM SPIN-EXCHANGE WITH ALKALI-METAL VAPORS - MU+CS

TitleMUONIUM ATOM SPIN-EXCHANGE WITH ALKALI-METAL VAPORS - MU+CS
Publication TypeJournal Article
Year of Publication1993
AuthorsPan, JJ, Senba, M, Arseneau, DJ, Kempton, JR, Fleming, DG, Baer, S, Gonzalez, AC, Snooks, R
JournalPhysical Review A
Volume48
Pagination1218-1226
Date PublishedAug
Type of ArticleArticle
ISBN Number1050-2947
KeywordsADDITION-REACTIONS, COLLISIONS, CROSS-SECTIONS, ENERGIES, HYDROGEN-ATOMS, LOW-PRESSURE GASES, MU-SR, RATE CONSTANTS, relaxation, SCATTERING
Abstract

The thermally averaged total electron spin-flip cross sections (sigma(SF)) for Mu-Cs have been measured in a 2 atm N2 moderator at 543, 566, and 643 K using the muon-spin-rotation technique. Within an overall experimental error of +/-15%, the measured cross sections can be taken as temperature independent, sigma(SF)=39.7+/-6.0 X 10(-16) cm2, though there may be a trend to decreased values at the lower temperatures. This average value is considerably lower than either the early calculated results of Dalgarno and Rudge [Proc. R. Soc. London Ser. A 286, 519 (1965)] or the more recent ones of Cole and Olson [Phys. Rev. A 31, 2137 (1985)] for the corresponding H-Cs collisions, indicating a dramatic isotope effect.

URL<Go to ISI>://A1993LQ99000046