Excited State Muon Transfer in Hydrogen/Deuterium Mixtures
/ Authors
B.Lauss, P.Ackerbauer, W.H.Breunlich, B.Gartner, M.Jeitler, P.Kammel, J.Marton, W.Prymas, J.Zmeskal, D.Chatellard
and 6 more authors
J.-P.Egger, E.Jeannet, H.Daniel, F.J.Hartmann, A.Kosak, C.Petitjean
/ Abstract
We report the first direct observation of excited state muon transfer in hydro-gen/deuterium mixtures by direct measurement of q 1s , the probability that a µ p atom, which is initially formed in an excited state, reaches the 1s ground state. The dependence of q 1s on deuterium concentration c d was measured for two different densities at cryogenic temperatures using charge coupled devices (CCDs) to detect the muonic X rays. First results based on the analysis of the K α -lines of the two isotopes are presented.