Excited State Muon Transfer in Hydrogen/Deuterium Mixtures (original) (raw)

We report the rst direct observation of excited state muon transfer in hydrogen/deuterium mixtures by direct measurement o f q 1s , the probability that a 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 dierent densities at cryogenic temperatures using charge coupled devices (CCDs) to detect the muonic X rays. First results based on the analysis of the K-lines of the two isotopes are presented.