Published 2002 | Version v1
Journal article Metadata-only

Surface excitations in thin helium films on silica aerogel

Creators

  • 1. Institut Laue Langevin, B.P.156, 38042, Grenoble Cedex 9 (France)
  • 2. Institute for Physics and Power Engineering, 249020, Bondarenko sq.1, Obninsk (Russian Federation)
  • 3. CNRS-CRTBT, 38042 Grenoble Cedex 9 (France)
  • 4. Fachbereich Physik, Universitaet Konstanz, 78434 Konstanz (Germany)

Description

First measurements are reported on pure surface excitations in thin superfluid 4He films on silica aerogel. The ripplon dispersion curve is found to be the same for helium on graphite and silica aerogel substrates. However, the layered roton line width in helium films on aerogel shows a pronounced broadening with respect to that found in helium films on graphite. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1007/s003390201774

Additional details

Identifiers

DOI
10.1007/s003390201774;

Publishing Information

Journal Title
Applied Physics. A, Materials Science and Processing
Journal Volume
74
Journal Issue
1,Suppl
Journal Page Range
p. s1547-s1549
ISSN
0947-8396
CODEN
APAMFC

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
34024491
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
DISPERSION RELATIONS; EXCITATION; GRAPHITE; HELIUM; HELIUM II; LINE BROADENING; ROTATIONAL STATES; ROTONS; SILICA GEL; SUBSTRATES; SURFACES; THIN FILMS
Descriptors DEC
ADSORBENTS; CARBON; ELEMENTS; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; EVEN-EVEN NUCLEI; EXCITED STATES; FILMS; FLUIDS; GASES; HELIUM 4; HELIUM ISOTOPES; ISOTOPES; LIGHT NUCLEI; MINERALS; NONMETALS; NUCLEI; QUANTUM FLUIDS; QUASI PARTICLES; RARE GASES; STABLE ISOTOPES

Optional Information

Notes
With 3 figs., 10 refs.