Eur. Phys. J. Special Topics 141, 117-120 (2007)
DOI: 10.1140/epjst/e2007-00027-9
1 Forschungszentrum Jülich, 52425 Jülich, Germany
2 Universität des Saarlandes, 66041 Saarbrücken, Germany
3 Institut Laue-Langevin, 38042 Grenoble, France
4 Universität Regensburg, 93040 Regensburg, Germany
(Published online: 29 March 2007)
© EDP Sciences, Springer-Verlag 2007
DOI: 10.1140/epjst/e2007-00027-9
Dynamics of argon in confined geometry
K. Schmalzl1, D. Wallacher2, M.M. Koza3, M. Rheinstädter3, D. Strauch4 and K. Knorr21 Forschungszentrum Jülich, 52425 Jülich, Germany
2 Universität des Saarlandes, 66041 Saarbrücken, Germany
3 Institut Laue-Langevin, 38042 Grenoble, France
4 Universität Regensburg, 93040 Regensburg, Germany
(Published online: 29 March 2007)
Abstract
The role of geometrical confinement on the dynamics of
argon is studied. We have investigated 36Argon adsorbed
in nanoporous Gelsil glass by inelastic neutron scattering.
By fractional filling the `dimensionality' of the system is tuned
from a two-dimensional towards the bulk state. Ab-initio
calculations of plane sheets of Ar atoms and of bulk Ar are
compared to the experimental results. A shift of various phonon
modes to lower energies with decreasing dimensionality is observed
in the results of both methods.
© EDP Sciences, Springer-Verlag 2007
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