Published August 2004 | Version v1
Journal article Metadata-only

Unconventional density dependence of the stochastic dynamics in an organic liquid

Creators

  • 1. Instituto de Estructura de la Materia, C.S.I.C., Serrano 123, E-28006 Madrid (Spain)
  • 2. Institut Laue Langevin, BP 156x, F-38042 Grenoble Cedex 9 (France)
  • 3. Department of Electricity and Electronics, University of the Basque Country, P.O. Box 644 Bilbao 48080 (Spain)
  • 4. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  • 5. Centre de Recherches sur les Materiaux a Haute Temperature, C.N.R.S. Orleans (France)
  • 6. Departamento de Quimica-Fisica I, Facultad de Ciencias Quimicas, Universidad Complutense de Madrid, E-28080 Madrid (Spain)
  • 7. Centre de Recherches sur le Matiere Divisee, Universite d'Orleans-CNRS, 45071 Orleans Cedex 2 (France)

Description

The density dependence of the diffusive rotational and center-of-mass dynamics of 2-methyl-pyridine is investigated by means of the concurrent use of quasielastic neutron scattering and molecular dynamics simulations. The dependence of both translation and rotational diffusion coefficients shows a distinctive change of slope with increasing density taking place about ρ=0.975 g/cm3. Such a change in the dynamics can be related to observations made in other liquids composed of oblate-spheroidal particles

Additional details

Identifiers

DOI
10.1103/PhysRevE.70.021501;

Publishing Information

Journal Title
Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Journal Volume
70
Journal Issue
2
Journal Page Range
p. 021501-021501.9
ISSN
1063-651X
CODEN
PLEEE8

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36010192
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
CENTER-OF-MASS SYSTEM; DENSITY; DIFFUSION; LIQUIDS; MOLECULAR DYNAMICS METHOD; NEUTRON DIFFRACTION; PICOLINES; QUASI-ELASTIC SCATTERING; STOCHASTIC PROCESSES
Descriptors DEC
AZINES; CALCULATION METHODS; COHERENT SCATTERING; DIFFRACTION; DIRECT REACTIONS; FLUIDS; HETEROCYCLIC COMPOUNDS; NUCLEAR REACTIONS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; PHYSICAL PROPERTIES; PYRIDINES; QUASI-FREE REACTIONS; SCATTERING

Optional Information

Notes
(c) 2004 The American Physical Society