Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Peter Verkerk"'
Autor:
Henry E. Fischer, Paul H K de Jong, Ingrid Petri, Peter Verkerk, Philip S. Salmon, W. Spencer Howells
Publikováno v:
Journal of Physics: Condensed Matter. 16:195-222
Neutron diffraction experiments, made at a steady-state reactor source, were used to study the structure of liquid 7Li at temperatures of 197, 452 and 595 °C. A careful data analysis procedure was undertaken in which specific issues taken into accou
Publikováno v:
Journal of Non-Crystalline Solids. :104-109
The presence of well defined collective excitations in molten potassium is investigated by the concurrent use of neutron-scattering techniques. These allow the separation and proper modeling of coherent and incoherent contributions to the total spect
Autor:
S.A. van der Aart, W. van der Lugt, I. Mirebeau, Peter Verkerk, M. Alvarez, Enrique Lomba, M. Bionducci
Publikováno v:
Zeitschrift für anorganische und allgemeine Chemie. 628:553-558
Neutron diffraction experiments were performed on the liquid alloys NaGa, NaGa3, KGa3 and CsGa3. The structure factors of KGa3 and CsGa3 display prepeaks at small wavenumbers (0.64 and 0.61 (A) over circle -1, respectively). This may indicate the exi
Autor:
Peter Verkerk
Publikováno v:
Journal of Physics: Condensed Matter. 13:7775-7799
Some aspects of the theory of the dynamics in liquids are reviewed and compared with results from computer simulations and experiments. The range of liquids includes liquefied rare gases, binary mixtures, molten metals and molten alloys. A few of tod
Publikováno v:
Electrochimica Acta. 46:1717-1721
We present the results of a detailed molecular dynamics study of poly(ethylene-oxide) (PEO) NaI polymer electrolytes. We focus on the influence of the salt on the dynamics of the polymer segments. This is done by calculating the mean square displacem
Publikováno v:
Computational Materials Science. 17:265-268
We present the results of molecular dynamics simulations of PEO x NaI polymer electrolytes, performed to study the influence of NaI on the dynamics of PEO. By calculating the mean square displacement of the CH 2 groups we observe that the Rouse-like
Autor:
Willem van der Lugt, Peter Verkerk
Publikováno v:
Plasmas & Ions. 3:3-19
In many liquid alloys of the alkali metals with members of the post-transition sp elements intermediate-range ordering occurs. It is supposed that in such alloys, which have an ionic character, the anions form clusters (polyanions). These clusters ar
Autor:
Francisco Javier Bermejo, Javier Dawidowski, Peter Verkerk, M. T. Fernández-Díaz, Carlos Cabrillo, R. Fernandez-Perea, S. M. Bennington, B. Fåk
Publikováno v:
Physical Review B. 60:15154-15162
Well-defined phonons with strong anomalous (upward) dispersion are observed by inelastic neutron scattering in liquid $para\ensuremath{-}{\mathrm{H}}_{2}$ at a temperature of 15.7 K. The damping, being very small for the low-$Q$ phonons, increases wi
Publikováno v:
Journal of Non-Crystalline Solids. :241-244
The purpose of the work presented here is to obtain structural information on thallium-rich caesium-thallium alloys by means of neutron diffraction. The alloys exhibit a long-range (>1 nm) superstructure. This range increases with the thallium conten
Publikováno v:
Physica B: Condensed Matter. 266:100-103
The dynamics of the polymer electrolyte polyethyleneglycol (PEG) with LiI as well as pure PEG is measured at room temperature by inelastic neutron scattering, while pure PEG is also investigated by new molecular dynamics (MD) simulations. First resul