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Experimental investigation of the muon transfer reaction from deuterium to helium isotopes |
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| Authors: | Gartner B. Ackerbauer P. Breunlich W. H. Cargnelli M. Fischer A. Kammel P. King R. Kminek G. Lauss B. Marton J. Prymas W. Steininger E. Zmeskal J. Petitjean C. Chatellard D. Egger J. -P. Jeannet E. Hartmann F. J. Kosak A. Mühlbauer M. von Egidy T. Piller C. Schaller L. A. Schellenberg L. Schneuwly H. Thalmann Y. -A. Tresch S. Werthmüller A. |
| Affiliation: | (1) Institute for Medium Energy Physics, Austrian A cademy of Sciences, Boltzmanngasse 3, A-1090 Vienna, Austria;(2) Paul Scherrer Institut, CH-5232 Villigen, Switzerland;(3) Institut de Physique de l'Université, CH-2000 Neuchâtel, Switzerland;(4) Physics Department, Technical University of Munich, D-85748 Garching, Germany;(5) Institut de Physique de l'Université, Pérolles, CH-1700 Fribourg, Switzerland;(6) Present address: University of California and L. Berkeley Laboratory, 94720, CA, USA |
| Abstract: | Muon transfer from the ground state of muonic deuterium to a helium atom proceeds mainly via the formation of a muonic molecule in an excited state. A large number of decay X rays ( 6.8 keV) from these (dµHe)* molecules were observed for the4He as well as for the3He case. The time distributions of these X rays allow the determination of the ground state transfer rate. The simultaneous employment of Ge/Si-detectors and CCDs for the same target conditions allows the determination of the branching ratio of radiative to nonradiative decay for the first time. |
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