| Issue |
Europhys. Lett.
Volume 37, Number 5, February II 1997
|
|
|---|---|---|
| Page(s) | 329 - 334 | |
| Section | Condensed matter: structure, thermal and mechanical properties | |
| DOI | https://doi.org/10.1209/epl/i1997-00152-9 | |
| Published online | 01 September 2002 | |
Temperature dependence of molecular kinetic energy in dense fluid parahydrogen
1
Dipartimento di Fisica e Istituto Nazionale di Fisica della Materia, Università di Roma “Tor Vergata” - Via della Ricerca Scientifica 1, Roma, Italy
2
Dipartimento di Fisica e Istituto Nazionale di Fisica della Materia, Università di Roma III - Via della Vasca Navale 86, Roma, Italy
3
ISIS Facility, Rutherford Appleton Laboratory, Chilton - Didcot, OX11 0QX, UK
Received:
25
September
1996
Accepted:
10
January
1997
We present an experimental and path integral Monte Carlo study of the single-molecule
dynamics in fluid parahydrogen. The experiment consists in an
inelastic neutron scattering determination of the translational kinetic
energy, 
, as a function of temperature at a density
close to the triple point. Experimental and simulated values of 
are found to be in good agreement in the investigated
temperature range. Discrepancies are found with a simple harmonic model
parametrized by the value of the zero-point kinetic energy.
PACS: 67.20.+k – Quantum effects on the structure and dynamics of
nondegenerate fluids (e.g., normal phase liquid 
) / 61.12.Ex – Neutron scattering techniques (including small-angle
scattering) / 61.25.Em – Molecular liquids
© EDP Sciences, 1997
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