The following
articles are published from Volume 27-1 through Volume 27-6 of the JPCRD.
Also listed are additional articles which have completed the review
process. These latter articles are ready for typesetting and will be
assigned to a specific issue at a later time. Monographs
and Supplements to the Journal, which are articles too lengthy for
a typical issue, are published separately. A listing of all monographs
and supplements is provided.
Contents
Articles
to be Published
Volume
27, No. 6, 1998
Volume 27, No. 5, 1998
Volume 27, No. 4, 1998
Volume 27, No. 3, 1998
Volume 27, No. 2, 1998
Volume 27, No. 1, 1998
NIST-JANAF
Thermochemical Tables, Fourth edition
JPCRD
- Vol. 29, 2000
JPCRD - Vol. 28, 1999
JPCRD - Vol. 26, 1997
JPCRD - Vol. 25, 1996
Articles
Published in Volume 27
Volume 27, No.
6, 1998
Tables of Elastic
Scattering Cross Sections of Photons in the Energy Range 50 keV to 1500
keV for All Elements in the Range 13 Z 104, p.
1011
B.K. Chatterjee
and S.C. Roy
Tables of differential
and total elastic scattering cross sections for 93 elements and for
selected photon energies have been presented. The available experimental
results are also compared with the tabulated values and the difference
is presented graphically.
The Observed
Properties of Liquid Helium at the Saturated Vapor Pressure, p.1217
Russell J. Donnelly
and Carlo F. Barenghi
The equilibrium
and transport properties of liquid 4He are deduced from
experimental observations at the saturated vapor pressure. In each case,
the bibliography lists all known measurements. Quantities reported here
include density, thermal expansion coefficient, dielectric constant,
superfluid and normal fluid densities, first, second, third, and fourth
sound velocities, specific heat, enthalpy, entropy, surface tension,
ion mobilities, mutual friction, viscosity and kinematic viscosity,
dispersion curve, structure factor, thermal conductivity, latent heat,
saturated vapor pressure, thermal diffusivity and Prandl number of helium
I, and displacement length and vortex core parameter in helium II.
Isotopic Compositions
of Elements 1997, p.1275
K.J.R. Rosman
and P.D.P. Taylor
The IUPAC Commission's
Subcommittee for Isotopic Composition of the Elements has carried out
its biennial review of isotopic compositions, as determined by mass
spectrometry and other relevant methods. New guidelines have been used
to arrive at the uncertainties on the isotopic abundances, and there
are numerous changes to the table since it was last published in 1991.
Atomic weights calculated from this table are consistent with Ar
(E) values listed in the Table of Standard Atomic Weights.
IUPAC-NIST
Solubility Data Series 66. Ammonium Phosphates, p.
1289
Jitka Eysseltova
and Thedford P. Dirkse
The solubility
of ammonium phosphate is reviewed. Many ammonium phosphates can be described
in terms of the ternary system: NH3–P2O5–H2O.
However, this system differs from systems like the sulfates and halates
in that it has a marked tendency to form condensed oligophosphate ions.
The literature survey covers the period up to 1988.
Volume 27, No.
5, 1998
Simultaneous
Assessment of the YBa2Cu3O6+z Thermodynamics
Under the Linear Error Model, p. 855
E.B. Rudnyi,
V.V. Kuzmenko, and G.F. Voronin
About 3000 experimental
points obtained in 220 miscellaneous experiments published in 57 papers
have been processed simultaneously in order to obtain the most reliable
Gibbs energy of the YBa2Cu3O6+z solid
solution in the temperature range from 250 K to 1300 K. The linear error
model has been employed for the simultaneous assessment. The results
obtained are compared with those of the conventional weighted least
squares method, and the benefit of the new approach is discussed. New
types of graphs that facilitate visualizing the quality of the fit are
presented.
Electron Interactions
with C3F8, p. 889
L.G. Christophorou
and J.K. Olthoff
To aid the many
and diverse applications for which perfluoropropane (C3F8)
is suited, we critically evaluate and synthesize existing knowledge
on electron scattering and electron energy-loss processes for the C3F8
molecule, and provide recommendations for the most reliable data. We
also draw attention to electron-interaction data that are not presently
available, but are needed for modeling the behavior of C3F8
in practical uses, especially plasma processing.
Thermodynamic
Properties of Importance to Environmental Processes and Remediation.
I. Previous Thermodynamic Property Values for Cadmium and Some of Its
Compounds, p. 915
Donald G. Archer
The sources of
previous thermodynamic property values are detailed for cadmium and
some compounds of cadmium. Included are descriptions of the sources
of information and methodology used to obtain the values for these compounds
reported in the NBS series of publications, loosely and collectively
referred to as the NBS Thermodynamics Tables.
Reference Correlation
of the Viscosity of Propane, p. 947
E. Vogel, C.
Kuchenmeister, E. Bich, and A. Laesecke
A new representation
of the viscosity of propane includes a zero-density correlation and
an initial-density dependence correlation based on the kinetic theory
of dilute gases and on the Rainwater-Friend theory. The higher density
contributions of the residual viscosity in the representation are formed
by a combination of double polynomials in density and recipocal temperature,
and a free-volume term with a temperature-dependent close-packed density.
The full surface correlation is based on experimental data selected
from a critical assessment of information from 37 original viscosity
studies; the review contains 96 citations.
Thermodynamic
Properties of Aqueous Magnesium Chloride Solutions from 250 to 600 K
and to 100 MPa, p. 971
Peiming Wang,
Kenneth S. Pitzer, and John M. Simonson
A new general
model that describes the thermodynamic properties of MgCl2(aq)
has been developed from a global fit to experimental results, including
isopiestic molalities, vapor pressure measurements, freezing-point depressions,
enthalpies of dilution, heat capacities, and densities. The model is
based on a recent ion-interaction treatment with extended higher-order
virial terms, and on experimental results from 240 to 627 K at pressures
to 100 MPa and molalities to 25 mol kg-1.
An International
Standard Equation of State for the Thermodynamic Properties of HFC-125
(Pentafluoroethane), p761
Chun-cheng
Piao and Masahiro Noguchi
An 18-coefficient
modified Benedict-Webb-Rubin equation of state for HFC-125 (pentafluoroethane)
has been developed. The equation of state is valid in the superheated
gaseous phase and the compressed liquid phase at pressures up to 68
MPa, densities to 1700 kg•m-3, and temperatures from the
triple point (172.52 K) to 475 K. This equation of state has been selected
as an international standard formulation for HFC-125 based on an evaluation
of the available equations of state by Annex 18 of the International
Energy Agency.
Thermochemistry
of the Boranes, p775
C.-L. Yu and
S. H. Bauer
A compilation
is presented of published experimental and computational reports (191
references) on the structures, vibrational frequencies, molar enthalpies
of formation, and standard entropies for 26 gas phase boranes for the
temperature range 0 K to 1500 K. Levels of uncertainties in the thermodynamic
functions have not been assessed because of the limited experimental
and theoretical data. The equilibrium compositions of the gas phase
were calculated at constant temperature and volume for several B/H ratios
at various temperatures and pressures.
Revised Formulation
for the Refractive Index of Water and Steam as a Function of Wavelength,
Temperature and Density, p807
Allan H. Harvey,
John S. Gallagher, and J.M.H. Levelt Sengers
Schiebener et
al. published a formulation for the refractive index of water and
steam in 1990 [J. Phys. Chem. Ref. Data 19, 677 (1990)]. It covered
the ranges 0.2µm to 2.5µm in wavelength, -12 °C to 500
°C in temperature, and 0 kg m-3 to 1045 kg m-3
in density. In the present paper, the data, after conversion to ITS-90,
have been refitted to the same functional form, but based on an improved
equation of state for water adopted by IAPWS in 1995. A substantial
improvement has been obtained in supercooled water at ambient pressure,
where the previous formulation was defective. Special attention has
been paid to the behavior of the refractive index in the near infrared
where strongly oscillating data were reported after the correlation
of Schiebener et al. had appeared, leading to subsequent curtailing
of the range of validity of the formulation. Newer results do not show
these oscillations.
Evaluated Gas
Phase Basicities and Proton Affinities of Molecules: An Update,
p413
Edward P.L.
Hunter and Sharon G. Lias
The available
data on gas phase basicities and proton affinities of approximately
1700 molecular, radical, and atomic neutral species are evaluated and
compiled. Tables of the data are sorted (1) according to empirical formula
and (2) according to evaluated gas basicity. This publication constitutes
an update of a similar evaluation published in 1984.
Data on Internal
Rarefied Gas Flows, p657
Felix Sharipov
and Vladimir Seleznev
The present review
is dedicated to one of the largest and a very important branch of the
rarefied gas dynamics; namely, to the internal flows. A critical analysis
of the corresponding numerical data and analytical results available
in the literature was made. The most reliable data were selected and
tabulated. The complete ranges of the primary parameters, determining
the rarefied gas flows through a capillary, are covered. The capillary
length varies from zero, when the capillary degenerates into a thin
orifice, to infinity, when the end effects can be neglected.
Energetics
of the O-H Bond in Phenol and Substituted Phenols: A Critical Evaluation
of Literature Data, p707
Rui M. Borges
dos Santos and Jose A. Martinho Simoes
This review presents
a critical assessment of the available experimental information (contained
in ~90 literature references) on the thermochemistry of the O-H
bond in phenol and substituted phenols. The analysis led to a set of
recommended values for O-H bond dissociation enthalpies, which in turn
allowed us to discuss several empirical and theoretical methodologies
used to estimate these data.
Vibrational
and Electronic Energy Levels of Polyatomic Transient Molecules. Supplement
A, p115
Marilyn E.
Jacox
A summary is provided
of recently published, critically evaluated experimental vibrational
and electronic energy level data for neutral and ionic transient molecules
and high temperature species possessing from three to sixteen atoms.
Observations in the gas phase, in molecular beams, and in rare-gas and
diatomic molecule matrices are evaluated. Radiative lifetimes and the
principal rotational constants are included.
Electron Interactions
with C2F6, p.1
L. G. Christophorou
and J. K. Olthoff
Perfluoroethane
(C2F6, hexafluoroethane) is a man-made gas. Knowledge
of its interactions with slow electrons (kinetic energies less than
about 100 eV) is fundamental in optimizing performance parameters involved
in the particular application. We have critically evaluated and synthesized
existing knowledge on electron interactions with C2F6.
Numerous cross sections and their intercomparison are presented and
discussed.
The Viscosity
of Carbon Dioxide, p.31
A. Fenghour,
W. A. Wakeham, and V. Vesovic
When representative
equations for the viscosity of carbon dioxide were published in 1990,
it was recognized that, owing to inconsistencies among the available
experimental liquid viscosity data which could not be resolved, new
measurements were necessary. Since then, two new sets of experimental
measurements have been performed. The previously published equations
have been revised to improve their performance in the liquid region.
In this work, the excess viscosity for the whole thermodynamic surface
is represented by one equation. The resulting viscosity representation
for carbon dioxide covers the temperature range 200 K 
T 1500
K and densities up to 1400 kg·m–3.
Survey and
Assessment of Available Measurements on Thermodynamic Properties of
the Mixture {Water + Ammonia}, p.45
Reiner Tillner-Roth
and Daniel G. Friend
Measurements of
available thermodynamic data for mixtures of water and ammonia are compiled
and summarized. The data sets are compared, using a Helmholtz free energy
formulation. Recommendations are given for which data sets are suited
to serve as a basis for an equation of state formulation of the thermodynamic
properties of {water + ammonia}. Gaps in the database are shown to give
experimenters orientation for future research.
A Helmholtz
Free Energy Formulation of the Thermodynamic Properties of the Mixture
{Water + Ammonia}, p.63
Reiner Tillner-Roth
and Daniel G. Friend
A thermodynamic
model incorporating a fundamental equation of state for the Helmholtz
free energy of the mixture {water + ammonia} is presented which covers
the thermodynamic space between the solid-liquid-vapor boundary and
the critical locus. It is valid in the vapor and liquid phases for pressures
up to 40 MPa. It represents VLE properties with an uncertainty of ±0.01
in liquid and vapor compositions. Typical uncertainties in the single-phase
regions are ±0.3% for the density and ±200 J·mol–1
for enthalpies.
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