Low temperature diffusion and trapping of muons in aluminium: New experiments and comparison with theory |
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| Authors: | O. Hartmann E. Karlsson E. Wäckelg»rd R. Wäppling D. Richter R. Hempelmann T. O. Niinikoski |
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| Affiliation: | (1) Dept. of Physics, Box 530, S-751 21 Uppsala, Sweden;(2) ILL, Grenoble, France;(3) IFF, KFA Jülich, FRG;(4) EP Div., CERN, Geneva, Switzerland |
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| Abstract: | The low-temperature diffusion experiments in aluminium have been extended to measurements onAlSi,AlGe andAlGa. The systematic study of Al with various impurities now shows that the trapping rate at temperatures below 2 K (described by a T−0.7 law) is directly related to the elastic distortion caused by each specific doping element. The overall diffusion behaviour in Al from 0.05 to 200 K can be described by the Kondo theory, only by assuming a low Debye frequency parameter, and if an additional T1 diffusion rate is included in the intermediate temperature range. |
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