摘要:

A study is made of the decomposition of a fluid direct correlation function into two parts,c(r)=cp(r)+ cc(r)withcpdetermined by the potential, andccrepresenting cooperative effects, in two situations:

ISSN:0031-9104    

DOI:10.1080/00319108608078495

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

Sodium vapour is modelled as a mixture of monomers, dimers and tetramers and the populations decided by energy minimisation. The analysis shows that the equation of state is consistent with the known binding energy and bond length of Na2, but the supplementation of dimers by tetramers alone (at least with the geometry at present favoured by theory) is deficient as a fine-tuning mechanism.

ISSN:0031-9104    

DOI:10.1080/00319108608078496

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

The bonding force between a polymer of n molecules in liquid A, (A)ln, is subject to an internal tension, τAn, attributable to the polymers of all sizes in liquid A. This tension exceeds the internal tension between pure polymer (A)lon, τ0An, and this enhanced tension, πAn=τAN—τAn, changes all partial molar quantities of (A)lnwithin liquid A with respect to the molar quantities of pure (A)lon, including the chemical potential of polymer (A)ln(such that μlAn(T, pl, xlAn) is equal to μloAn(T,pl—πAn)). When the vapor of A is in equilibrium with liquid A, the vapor of (A)nmust also be in equilibrium with liquid (A)nfor every n from 1 to N. Even when the mole fraction of polymer (A)lnis altered by changing the pressure applied to liquid A, its mole fraction must equal the mole fraction of (A)vnin the vapor phase with which it is in equilibrium, i.e., xlAn=xlAnfor an)T or pv. Since water vapor is monomeric, liquid water must also be monomeric.

ISSN:0031-9104    

DOI:10.1080/00319108608078497

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

Data on the long wavelength limit S(0) of the liquid structure factorS(k)near the melting temperatureTmare examined for about twenty liquid metals.STm(0)/Tmis sensibly constant within families of chemically similar liquid metals, or equivalentlyBω= constant withBthe bulk modulus and ω the atomic volume.

ISSN:0031-9104    

DOI:10.1080/00319108608078498

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

The radial distribution functions,4πr2gij(r), of molten alkali halides, obtained by Monte Carlo simulations, have been deconvoluted into contributions from the first, second, third, etc. neighbours. These individual distribution functions indicate that in alkali halide melts the first coordination sphere of the ions contains an integral or half integral number of unlike charged ions. The shapes of the individual distribution functions show characteristic changes from first coordination shell neighbours to second shell ones and this can be utilised to make the selection of the boundary of the coordination sphere less arbitrary. Such a deconvolution reveals more of the structure in the case of the like charged ion distributions as well.

ISSN:0031-9104    

DOI:10.1080/00319108608078499

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

We present results of calculations of the liquid structure factorS(q)of the alkali metals by using an analytical form for the direct correlation function of the OCP reference system as well as the random phase approximation to consider the electronic screening. The treatment, which is based on the Baus and Hansen model, works well with two parameters γ and x0. It is found out that the valuex20= 2.34 is good to describe the low-q region ofS(q)but unable to reproduce the first peak whilex20= 3.2 makes the situation reversed.

ISSN:0031-9104    

DOI:10.1080/00319108608078500

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

By means of a toroidal oscillating viscometer, the shear viscosity of some mercury thallium alloys has been measured in the composition range 33–33.5 atomic percent thallium and over the temperature range from 13.5–16.5°C. Some discussion of the experimental results is given in terms of liquid coordination number.

ISSN:0031-9104    

DOI:10.1080/00319108608078501

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

It is demonstrated thatTcKnc= constant for the critical constants of the alkali metals, where the exponentnis about 0.3. This is in marked contrast to the noble gases, wherenis about—2. Further, the compressibility ratiopcVc/RTcfor the alkalis ranges from 0.06 for Li to 0.20 for Cs, while for the noble gases the value is 0.29 ± 0.01. The importance of Coulomb forces in interpreting the results for the alkali metals is stressed.

ISSN:0031-9104    

DOI:10.1080/00319108608078502

出版商:Taylor & Francis Group    

年代:1986

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:10.1080/00319108608078494

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor