| Issue |
J. Phys. Colloques
Volume 48, Number C8, Décembre 1987
Fifth European Conference on Internal Friction and Ultrasonic Attenuation in Solids
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|---|---|---|
| Page(s) | C8-281 - C2-286 | |
| DOI | https://doi.org/10.1051/jphyscol:1987840 | |
Fifth European Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 48 (1987) C8-281-C2-286
DOI: 10.1051/jphyscol:1987840
Physics Department, University of Trondheim, N.T.H., N-7034 Trondheim, Norway
J. Phys. Colloques 48 (1987) C8-281-C2-286
DOI: 10.1051/jphyscol:1987840
TUNNELLING MOTION AND INTERNAL FRICTION OF HYDROGEN IN METALS
I. SVAREPhysics Department, University of Trondheim, N.T.H., N-7034 Trondheim, Norway
Abstract
Tunnelling motion of hydrogen in metals is possible in
excited states and through two-phonon transitions. Asymmetry between the H
sites blocks the tunnelling and permits only slow classical hopping. We discuss
in a simple model the various tunnelling rates, and we get quantitative
agreement between many types of experimental data for H, D and T in Pd, V, Nb
and Ta. PACS no. 6240, 6320 M, 6630 J.