Showing papers in "Journal of Physical and Chemical Reference Data in 1983"
TL;DR: In this article, a table for the surface tension of water from 0.01 to 374°C and an interpolating equation which represents the values in the table to well within their estimated uncertainties are presented.
Abstract: This paper presents a table for the surface tension of water from 0.01 to 374 °C and an interpolating equation which represents the values in the table to well within their estimated uncertainties. The table of values and the interpolating equation are those recommended by the International Association for the Properties of Steam (IAPS) in its recent official release. The experimental measurements of the surface tension of water and their uncertainties are discussed, as is the development of the IAPS tables.
1,067 citations
TL;DR: In this article, a review of the solubility of oxygen and ozone in liquids as a function of temperature and pressure is presented, and the trend of solubilities in homologous series or related solvents is discussed.
Abstract: This review covers the solubility of oxygen and ozone in liquids as a function of temperature and pressure. Solubility data for individual systems were critically evaluated and recommended or tentative values presented in many cases. The trend of solubilities in homologous series or related solvents is discussed. Liquids include water; seawater; aqueous salt solutions; mixed solvents; hydrocarbons; organic compounds containing oxygen, halogen, sulfur, nitrogen, or silicon; olive oil; and human blood. For ozone, only its solubility in water is presented. Key words: aqueous solutions; biological fluids; gas solubility; hydrocarbons; mixed solvents; organic solvents; oxygen; ozone; seawater; water.
624 citations
TL;DR: In this paper, the Gibbs energy functions and enthalpy functions for gaseous diatomic monoxides were calculated from literature values for molecular parameters. Computer methods of storage, processing and retrieval are described and the resulting data are given in tables 4 to 11.
Abstract: Values for standard enthalpies of formation and dissociation energies for gaseous diatomic monoxides have been selected by critical assessment of experimental data from the literature. Gibbs energy functions, (−(G○T −H○298)/T), and enthalpy functions, (H○T −H○298), have been calculated from literature values for molecular parameters. Computer methods of storage, processing and retrieval are described and the resulting data are given in tables 4 to 11.
348 citations
TL;DR: In this article, a new program for the compilation and evaluation of chemical kinetic data is described, where rate coefficient measurements are assessed for probable accuracy and precision, and a recommended rate coefficient is given in the form k=ATn ×exp(−B/T).
Abstract: A new program for the compilation and evaluation of chemical kinetic data is described. Rate coefficient measurements are assessed for probable accuracy and precision. Transition‐state theory is often used to extrapolate measurements to higher temperatures. For every reaction reviewed, a recommended rate coefficient is given in the form k=ATn ×exp(−B/T). Pertinent data and conclusions are summarized on a two‐page Data Sheet, each sheet covering one reaction or occasionally two or three closely related reactions. Twenty‐seven Data Sheets are presented for reactions important in modeling and understanding chemical lasers, hydrogen–oxygen combustion, hydrocarbon oxidation, and aluminum or boron propellant systems.
328 citations
TL;DR: In this article, experimental and theoretical cross section data for electron impact ionization of light atoms and ions have been assessed and, based on this assessment and, in some cases, on the classical scaling laws, a recommended cross section has been produced for each species.
Abstract: Experimental and theoretical cross section data for electron impact ionization of light atoms and ions have been assessed. Based on this assessment and, in some cases, on the classical scaling laws, a recommended cross section has been produced for each species. This has been used to evaluate recommended Maxwellian rate coefficients over a wide range of temperatures. Convenient analytic expressions have been obtained for the recommended cross sections and rate coefficients. The data are presented in both graphical and tabular form and estimates of the reliability of the recommended data are given.
259 citations
TL;DR: Energy level data for the atom and all positive ions of silicon (Z = 14) are given in this paper, where the level values in cm−1 and the parity, the J value and the configuration and term assignments are listed if known leading percentages from the calculated eigenvectors are tabulated or quoted wherever available ionization energies are given for all spectra.
Abstract: Energy level data are given for the atom and all positive ions of silicon (Z=14) These data have been critically compiled, mainly from published material on measurements and analyses of the optical spectra We have derived or recalculated the levels for a number of the ions In addition to the level value in cm−1 and the parity, the J value and the configuration and term assignments are listed if known Leading percentages from the calculated eigenvectors are tabulated or quoted wherever available Ionization energies are given for all spectra Key words: atomic energy levels; atomic ions; atomic spectra; electron configurations; ionization potentials; silicon
222 citations
TL;DR: In this article, the available data and information on the electrical resistivity of ten selected binary alloy systems and presents the recommended values resulting from critical evaluation, correlation, analysis, and synthesis of available data.
Abstract: This work compiles, reviews, and discusses the available data and information on the electrical resistivity of ten selected binary alloy systems and presents the recommended values resulting from critical evaluation, correlation, analysis, and synthesis of the available data and information. The ten binary alloy systems selected are the systems of aluminum–copper, aluminum–magnesium, copper–gold, copper–nickel, copper–palladium, copper–zinc, gold–palladium, gold–silver, iron–nickel, and silver–palladium. The recommended values for each of the ten binary alloy systems except three (aluminum–copper, aluminum–magnesium, and copper–zinc) are given for 27 compositions: 0 (pure element), 0.5, 1, 3, 5, 10(5)95, 97, 99, 99.5, and 100% (pure element). For aluminum–copper, aluminum–magnesium, and copper–zinc alloy systems, the recommended values are given for 26, 12, and 11 compositions, respectively. For most of the alloy systems the recommended values cover the temperature range from 1 K to the solidus temperature of the alloys or to about 1200 K. For most of the nine elements constituting the alloy systems, the recommended values cover the temperature range from 1 K to above the melting point into the molten state. The estimated uncertainties in most of the recommended values are about ±3% to ±5%. Key words: alloy systems; alloys; conductivity; critically evaluated data; data analysis; data compilation; data synthesis; electrical conductivity; electrical resistivity; metals; recommended values; resistivity.
200 citations
TL;DR: In this paper, various absolute determinations of the thermal expansivity of both single crystal and polycrystalline silicon are used to establish a smooth relationship from 90 to 850 K which is believed to be reliable to roughly 10−8 K−1, and which is extrapolated to 1000 K.
Abstract: Silicon, a high melting point, low expansivity, cubic material which can be obtained readily in high purity form, provides an excellent thermal expansion standard. Various absolute determinations of the thermal expansivity of both single crystal and polycrystalline silicon are used to establish a smooth relationship from 90 to 850 K which is believed to be reliable to roughly 10−8 K−1, and which is extrapolated to 1000 K. Values also are suggested for temperatures to absolute zero. Key words: high temperature expansivity; silicon; standard expansivities; thermal expansivity.
188 citations
TL;DR: In this paper, the electron drift velocity, the ratio of diffusion to mobility, the electron attachment and ionization coefficients, and the electron growth constant as functions of E/N, the reduced field strength, for each gas are discussed.
Abstract: Available data on the electron transport properties and electron swarm coefficients are discussed for the following electronegative gases: SF6, CF4, C2F6, C3F8, C4F10, CCl2F2, O2, air, H2O, CO2, F2, NF3, Cl2, Br2, I2, N2O, NO, HCl, NH3. Graphical presentations comparing measured and calculated data are given for the electron drift velocity, the ratio of diffusion to mobility, the electron attachment and ionization coefficients, and the electron growth constant as functions of E/N, the reduced field strength, for each gas. Graphs of the detachment and excitation coefficients are presented where these data are available. Data originally reported in terms of rate coefficients as functions of mean electron energy are graphically presented in that form. Recommendations concerning reliability are made.
154 citations
TL;DR: In this paper, the relativistic Hartree-Fock-Slater modified atomic form factor (HFFS) was used to represent the atomic Rayleigh scattering amplitudes with good accuracy at energies well above the K−shell binding energies and small momentum transfers.
Abstract: Tabulations are presented of relativistic Hartree–Fock–Slater modified atomic form factors from x=0 to 100 A−1 for all elements from Z=1 to Z=100. These modified form factors represent the atomic Rayleigh scattering amplitudes with good accuracy at energies well above the K‐shell binding energies and small momentum transfers and therefore should be used instead of the normal relativistic atomic form factors in the MeV energy range.
150 citations
TL;DR: In this article, the heat capacity of poly(1)-butene, poly-(1-pentene), poly(2-methylbutadiene) and poly(3-chlorostyrene) is reviewed on the basis of 62 measurements reported in the literature.
Abstract: The heat capacity of poly‐1‐butene, poly‐1‐pentene, poly‐1‐hexene, polyisobutylene, poly(4‐methyl‐1‐pentene), polybutadiene, cis‐1, 4‐poly(2‐methylbutadiene), polycyclopentene, poly(vinyl fluoride), poly(vinylidene fluoride), polytrifluoroethylene, polytetrafluoroethylene, poly(vinyl chloride), poly(vinylidene chloride), polychlorotrifluoroethylene, poly(vinyl alcohol), poly(vinyl acetate), poly(α‐methylstyrene), poly(o‐methylstyrene), poly(o‐chlorostyrene) and a series of poly(vinyl benzoate)s is reviewed on the basis of 62 measurements reported in the literature. A set of recommended data has been derived for each polymer. Entropy and enthalpy functions have been calculated for poly‐1‐hexene, polyisobutylene, cis‐1, 4‐poly(2‐methylbutadiene), poly(vinyl chloride), and poly(α‐methylstyrene). This paper is seventh in a series which will ultimately cover all heat capacity measurements on linear macromolecules.
TL;DR: In this article, an analysis of the experimental data on thermodynamic properties in the critical region of steam is presented, and the model used is that of revised and extended scaling, as given by the modern theory of critical phenomena, which is valid in the range 200-420 kg/m3 in density and 644-693 K in temperature.
Abstract: An analysis is presented of the experimental data on thermodynamic properties in the critical region of steam. The model used is that of revised and extended scaling, as given by the modern theory of critical phenomena. All thermodynamic properties are given in closed (parametric) form. The model has, in addition to three universal constants that are given by theory, sixteen adjustable parameters that were obtained by least‐squares fit to PVT and speed‐of‐sound data. It is valid in the range 200–420 kg/m3 in density and 644–693 K in temperature. It accurately represents the experimental data for equation of state, vapor pressure, latent heat, specific heats Cp and Cv and speed of sound. Our analysis permits new estimates of the critical parameters of steam, and has led to a number of conclusions regarding the mutual consistency of the experimental data. Tabulated values of the thermodynamic properties of steam are appended to the paper.
TL;DR: In this paper, the heat capacity of polyglycolide, poly(e−caprolactone), poly(ethylene terephthalate), polyethylene sebacate, polyglycine and poly(L−alanine) are reviewed.
Abstract: Heat capacity of polyglycolide, poly(e‐caprolactone), poly(ethylene terephthalate), poly(ethylene sebacate), polyglycine, poly(L‐alanine), poly(L‐valine),nylon 6, nylon 6.6 and nylon 6.12 is reviewed on the basis of measurements on 35 samples reported in the literature. All heat capacity data are compiled and a set of recommended data have been derived for each polymer. Crystallinity dependence is critically evaluated for poly(ethylene terephthalate). Enthalpy and entropy functions are calculated for amorphous poly(ethylene terephthalate). This is the eighth paper in a series of publications which will ultimately cover all heat capacity measurements of linear macromolecules.
TL;DR: In this paper, the International Representations of the Viscosity and Thermal Conductivity of Heavy Water Substance of the International Association for the Properties of Steam have been reviewed and critically evaluated.
Abstract: Data for the viscosity and thermal conductivity of dense gaseous and liquid heavy water (D2O) have been reviewed and critically evaluated. Selected data were fitted to equations, from which tables of values were generated from temperatures up to 500 °C and for pressures up to 100 MPa for the viscosity and up to 550 °C and 100 MPa for the thermal conductivity. The uncertainties of the tabular values were estimated. The present paper is intended to explain the background of the International Representations of the Viscosity and Thermal Conductivity of Heavy Water Substance of the International Association for the Properties of Steam. With the aid of the present correlations, the kinematic viscosity, thermal diffusivity, and Prandtl number have been calculated. The present status of the gaseous diffusion coefficient is also briefly reviewed.
TL;DR: In this paper, a series of polymers which include aromatic rings and/or inorganic chain atoms are treated and the heat capacities of poly(4,4′−isopropylidenediphenylene carbonate), polyphenylenediamides, polyheteroarylenes, poly(dimethyl siloxane), poly(diethyl siloxanes), poly-oxane, polytrimethylsilyl ethylene, polyplastic polysiloxane poly(poly(polyphenylsilsesquioxane) poly(
Abstract: In this final review, a series of polymers which include aromatic rings and/or inorganic chain atoms are treated. Heat capacities of poly(4,4′‐isopropylidenediphenylene carbonate), polyphenylenediamides, polyheteroarylenes, poly(dimethyl siloxane), poly(diethyl siloxane), poly(trimethylsilyl ethylene), poly(dimethylphenylsilyl ethylene), poly(dimethylbenzylsilyl ethylene), poly(vinylene diphenylsilylene), poly(vinylene diphenylgermylene), poly(diethnyl diphenysilylene), poly(diethnyl diphenylgermylene), poly(2,3,4,5‐tetraphenyl‐1, 1‐diethylgermocyclopentadiene), poly(phenylsilsesquioxane), poly[ethylene ‐N‐(β‐trimethylsilylethyl)imine] and polysulfones have been reviewed on the basis of measurements on 36 samples reported in the literature. All heat capacity data are compiled and a set of recommended data are derived. Enthalpy and entropy functions are calculated for poly(4,4′‐isopropylidenediphenylene carbonate) and poly(dimethyl siloxane).
TL;DR: In this paper, an atlas of the high-temperature absorption spectrum of water vapor in the 3000 to 4000 cm−1 region was presented, where the infrared spectrum was recorded at Doppler-limited resolution using a tunable difference-frequency laser spectrometer.
Abstract: An atlas of the high‐temperature (1200 K) absorption spectrum of water vapor in the 3000 to 4000 cm−1 region is presented. The infrared spectrum was recorded at Doppler‐limited resolution using a tunable difference‐frequency laser spectrometer. The spectral region scanned encompasses the strong OH stretching fundamentals, ν1 and ν3, and the bending overtone, 2ν2, as well as associated hot bands. Almost all the lines have been assigned using a model Hamiltonian which yields very satisfactory agreement between calculated and observed line positions for J up to 27 or Ka up to 14. The calculated eigenvectors applied to the transition moment operator predict the measured line intensities quite closely. This work should serve as a reference for analyzing spectra from high‐temperature sources such as combustion exhausts and cool stars.
TL;DR: In this article, the vapor pressure data on 324 coal compounds were collected and analyzed using the least square method. And the adopted data sets for each substance were weighted and combined to fit into a Cox vapor pressure equation, log10P=(1−D/T)×10(A+BT+CT2) by the least squares method.
Abstract: The vapor pressure data on 324 coal compounds are collected and analyzed. The adopted data sets for each substance are weighted and combined to fit into a Cox vapor pressure equation, log10P=(1−D/T)×10(A+BT+CT2) by the least‐squares method. The results of the literature review and the evaluated values of coefficients for the vapor pressure equations are presented in separate tables. For ease of presentation, the coal compounds are divided into seven groups, based upon their molecular structures. They are (1) benzene and its derivatives, (2) naphthalene and its derivatives, (3) saturated ring compounds, (4) unsaturated ring compounds, (5) heterocyclic sulfur compounds, (6) heterocyclic nitrogen compounds, and (7) heterocyclic oxygen compounds.
TL;DR: In this article, an analysis of the thermodynamic properties of D2O in the critical region is presented, where the data can be represented by the same revised and extended scaled fundamental equation formulated earlier for H2O.
Abstract: An analysis is presented of the thermodynamic properties of D2O in the critical region. It is shown that the data can be represented by the same revised and extended scaled fundamental equation formulated earlier for the thermodynamic properties of H2O in critical region. The equation is valid in the range 220–465 kg/m3 in density and 638–683 K in temperature. Tabulated values of the thermodynamic properties of D2O in the critical region are presented. A comparison with a comprehensive analytic fundamental equation, recently formulated by Hill and co‐workers, is included in the paper.
TL;DR: In this article, the authors evaluated the theoretical cross section data for the charge exchange process of multiply charged fully stripped ions with hydrogen atoms in the energy range from ∼10 eV/u to ∼103 keV/U. The ionic charge state ranges from Z 2 to Z 54.
Abstract: The existing theoretical cross section data for the charge exchange process of multiply charged fully stripped ions with hydrogen atoms are evaluated in the energy range from ∼10 eV/u to ∼103 keV/u. The evaluation has been performed on the basis of both pure theoretical arguments and comparison with the most accurate experimental cross sections. The ionic charge state ranges from Z=2 to Z=54. The theoretical methods for calculation of the charge exchange cross sections are briefly discussed, and their regions of validity and the accuracy of the produced data are assessed.