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Hyperfine Interactions

, Volume 31, Issue 1–4, pp 205–210 | Cite as

Diffusion of positive mouns in copper detected by zero-field μSR

  • R. Kadono
  • T. Matsuzaki
  • K. Nagamine
  • T. Yamazaki
  • D. Richter
  • J. -M. Welter
Muon Diffusion

Abstract

Using the Zero-Field μSR method coupled with the unique pulsed muon beam, new systematic measurements of diffusion (hopping) rate of positive muon were performed for the two ultra-pure copper samples (residual resistivity ratio = 18,000 and 7,350) and for the copper doped with 95 ppm iron. For these measurements a new detection system with an improved time resolution was installed to reduce the distortion of μ-e decay time spectrum due to the counting loss of positrons. A preliminary result suggests that the leveling-off of the hopping rate below 0.5 K is not affected by the purity for the ultra-pure sample, while it is strongly modified for the doped copper.

Keywords

Iron Copper Systematic Measurement Decay Time Time Resolution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© J.C. Baltzer A.G., Scientific Publishing Company 1986

Authors and Affiliations

  • R. Kadono
    • 1
  • T. Matsuzaki
    • 1
  • K. Nagamine
    • 1
  • T. Yamazaki
    • 1
  • D. Richter
    • 2
  • J. -M. Welter
    • 2
  1. 1.Meson Science Laboratory and Department of Physics, Faculty of ScienceUniversity of TokyoTokyoJapan
  2. 2.Institut für Festkörperforschung KernforschungsanlageJülich GmbHJülichFed. Rep. of Germany

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