摘要:

Observed liquid structure factors are now known to provide, through their behaviour beyond their principal peaks, useful but limited information about interatomic core forces. It is argued that they also carry, below their principal peaks, the signatures of the interatomic tail characters. This proposition is illustrated by tests on cases of different type where the forces are either known or can be plausibly conjectured. In particular, the difference between metals and insulators can be distinguished.

ISSN:0031-9104    

DOI:10.1080/00319108408080791

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

The hypersonic velocity and absorption have been measured in aqueous CdCl2solutions in the temperature range between 9.30 and 70.0°C by Brillouin light scattering techniques, as a function of the concentration.

ISSN:0031-9104    

DOI:10.1080/00319108408080792

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

Monte Carlo calculations of the pair correlation functiong(r)and numerical solutions of the Percus-Yevick equation are reported for a Lennard-Jones potential, the krypton potential of Barkeret al.and a long range three-body (triple dipole and dipole-dipole-quadrupole) potential at 297 K and densities between 2 and 14 × 1027atoms/m3. We compare in real and Fourier space, and also calculate the pressure and compressibility. The latter two quantities are compared to experimental data on the 297 K isotherm, and while the PY results are in agreement the Barkeret al.potential results are significantly different for ρ > 3 × 1027atoms/m3.

ISSN:0031-9104    

DOI:10.1080/00319108408080793

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

A simple model for the free energy of mixing of a binary fluid is proposed using hard spheres as a reference system and a tail interaction between the unlike atoms. The model, firstly, provides an interpretation and rationale for the interchange energy parameterwand its temperature dependence occurring in the Flory formula and for a number of other current ideas. Secondly, it leads to a formula which appears to be a suitable next step in the refinement of the Flory model.

ISSN:0031-9104    

DOI:10.1080/00319108408080794

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

The experimentally determined structure factor for an aqueous dispersion of charged polystyrene spheres is analyzed in terms of a system of particles interacting through a shouldered hard sphere potential. The fit of the model system to the experimental data is sufficiently good that the fluid represents a suitable reference system for perturbation studies of the small-angle scattering.

ISSN:0031-9104    

DOI:10.1080/00319108408080795

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

A method based on the random phase approximation (RPA) is used to calculate the effective interparticle pair potential ϕ(r) in a concentrated charged colloidal dispersion from an observed structure factorS(q). By using Monte Carlo simulation results for inverse power potential fluids at their melting points as reference systems, the perturbation scheme determines ϕ(r) at the melting point of the colloid from experimental data. The resulting ϕ(r) is found to be oscillatory and differ qualitatively from the form predicted by DLVO theory.

ISSN:0031-9104    

DOI:10.1080/00319108408080796

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

The tendency of alkali-earth cationM2+(M= Be, Mg, Ca, Sr, Ba) to form a complex ion in molten alkali chlorides ACl (A= Li, Na, K, Rb, Cs) has been interpreted in terms of attractive Coulomb interactions between the cation and anion; ΔΦ = Φ(MCl)– Φ(ACl). The experimental results by means of the Laser Raman spectroscopy indicated the presence of some complex ion in the molten ACl-MCl2systems only when ΔΦ ⪅ 0.38. Coexistence of an octahedral and a tetrahedral complex ions, [CaCl6]4-and [CaCl4]2-, has been suggested via deconvolution of Raman band in the molten 2KCl · CaCl2composition.

ISSN:0031-9104    

DOI:10.1080/00319108408080797

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

In solid transition metals, the bulk modulus varies systematically with the filling of the d-band. Assuming this behaviour remains true just above the melting temperature, 21 binary liquid transition metal alloys with Mn as solute in dilute concentration are predicted to exhibit Mn surface segregation while the remaining 5 alloys may or may not. With Cr replacing Mn, the corresponding numbers are 9 and 17. Certain Cr rich alloys are also deemed worthy of further investigation.

ISSN:0031-9104    

DOI:10.1080/00319108408080798

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

This is a scanned image of the original Editorial Board page(s) for this issue.

ISSN:0031-9104    

DOI:10.1080/00319108408080790

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor