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Study of the effects of confinement in the collective excitations of liquid deuterium

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Abstract.

The spectrum of collective excitations of liquid deuterium in the bulk and confined within a MCM-41 matrix having pores of an average diameter of 2.4 nm has been studied by means of neutron scattering and molecular dynamics simulations. The main effects of confining liquid D2 consist in a shift of the characteristic frequencies associated with damped density oscillations to higher energies. A strong decrease in diffusivity is also observed upon confinement.

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Authors and Affiliations

  1. Instituto de Ciencia de Materiales de Aragón, CSIC, Zaragoza, Spain and Institut Laue Langevin, Grenoble, France

    M. A. González

  2. CNR-INFM, CRS-Soft and Institut Laue Langevin, Grenoble, France

    C. Mondelli

  3. Instituto de Estructura de la Materia, CSIC, Madrid, Spain

    C. Cabrillo & R. Fernández-Perea

  4. Dept. Electricity and Electronics, University of the Basque Country, Bilbao, Spain

    F. J. Bermejo

  5. European Synchrotron Radiation Facility, Grenoble, France

    F. Albergamo

  6. Facultad de Ciencias Químicas, Universidad Complutense, Madrid, Spain

    E. Enciso, C. Carbajo & M. J. Torralvo

Authors
  1. M. A. González
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  2. C. Mondelli
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  3. C. Cabrillo
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  4. R. Fernández-Perea
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  5. F. J. Bermejo
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  6. F. Albergamo
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  7. E. Enciso
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  8. C. Carbajo
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  9. M. J. Torralvo
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González, M., Mondelli, C., Cabrillo, C. et al. Study of the effects of confinement in the collective excitations of liquid deuterium. Eur. Phys. J. Spec. Top. 141, 35–38 (2007). https://doi.org/10.1140/epjst/e2007-00012-4

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  • DOI: https://doi.org/10.1140/epjst/e2007-00012-4

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