Volume 12, Issue 3, July 1983
Index of content:
12(1983); http://dx.doi.org/10.1063/1.555689View Description Hide Description
An atlas of the high‐temperature (1200 K) absorptionspectrum 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 K a 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.
Small‐Angle Rayleigh Scattering of Photons at High Energies: Tabulations of Relativistic HFS Modified Atomic Form Factors12(1983); http://dx.doi.org/10.1063/1.555690View Description Hide Description
Tabulations are presented of relativistic Hartree–Fock–Slater modified atomic form factors from x=0 to 100 Å− 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.
12(1983); http://dx.doi.org/10.1063/1.555691View Description Hide Description
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.
12(1983); http://dx.doi.org/10.1063/1.555692View Description Hide Description
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=A T n ×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.
Molten Salts: Volume 5, Part 2. Additional Single and Multi‐Component Salt Systems. Electrical Conductance, Density, Viscosity and Surface Tension Data12(1983); http://dx.doi.org/10.1063/1.555693View Description Hide Description
Evaluated data for the four properties, density, surface tension,viscosity, and electrical conductance are reported for salt systems in which the anionic and cationic species may differ. This contrasts with the systems in the preceding publications in this series in which the anionic species were, in general, the same in the binary mixtures. The results are reported in equation form, with brief tables of numerical values. A cross index by salt system was compiled and is included for ease of accessing the data tables.
12(1983); http://dx.doi.org/10.1063/1.555688View Description Hide Description
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.