Физика Низких Температур: Том 27, Выпуск 9-10 (Сентябрь 2001), c. 1153-1159    ( к оглавлению , назад )

Muonium diffusion in solid CO2

D. G. Eshchenko

Institute for Nuclear Research, Moscow 117312, Russia
E-mail: eschenko@a120.inr.troitsk.ru

V. G. Storchak

Russian Research Centre "Kurchatov Institute", 46 Kurchatov Sq., Moscow 123182, Russia

J. H. Brewer

Canadian Institute for Advanced Research and Department of Physics and Astronomy, University of British Columbia, Vancouver, B.C., Canada V6T 1Z1

S. P. Cottrell and S. F. J. Cox *

Rutherford Appleton Laboratory, Chilton, Oxfordshire 0X11 OQX, UK

Received April 25, 2001

Аннотация

The quantum diffusion of interstitial muonium atoms in solid CO2 is studied in the temperature range from 5 to 200 K using the technique of muonium spin rotation and relaxation. Muonium exhibits coherent bandlike dynamics between 140 and 160 K. At low temperature Mu undergoes strong localization.

PACS:
66.30.Jt - Diffusion of impurities
66.35.+a - Quantum tunneling of defects
67.80.Mg - Defects, impurities, and diffusion
76.75.+i - Muon spin rotation and relaxation