摘要:

The experimentally determined ground‐state vibrational energy levels of approximately 480 covalently bonded transient molecules possessing from 3 to 16 atoms are tabulated, together with references to the pertinent literature. The types of measurement surveyed include laser‐based high resolution gas phase infrared absorption and visible‐ultraviolet emission techniques, ultraviolet photoelectron spectroscopy, and matrix isolation spectroscopy. An assessment of the magnitude of the uncertainty of observations in neon, argon, and nitrogen matrices is given.

ISSN:0047-2689    

DOI:10.1063/1.555722

出版商:AIP    

年代:1984

数据来源: AIP

摘要:

This work compiles, reviews, and discusses the available data and information on the electrical resistivity of hafnium, molybdenum, tantalum, tungsten, and zinc and presents the recommended values resulting from critical evaluation, correlation, analysis, and synthesis of the available data and information. The recommended values presented are both uncorrected and also corrected for the thermal expansion of the material and 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 ±2% to ±10%.

ISSN:0047-2689    

DOI:10.1063/1.555723

出版商:AIP    

年代:1984

数据来源: AIP

摘要:

This work compiles, reviews, and discusses the available data and information on the electrical resistivity of vanadium and zirconium and presents the recommended values resulting from critical evaluation, correlation, analysis, and synthesis of the available data and information. The recommended values presented are uncorrected and also corrected for the thermal expansion of the material and 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 ±2% to ±5%.

ISSN:0047-2689    

DOI:10.1063/1.555724

出版商:AIP    

年代:1984

数据来源: AIP

摘要:

This work compiles, reviews, and discusses the available data and information on the electrical resistivity of aluminum and manganese and presents the recommended values resulting from critical evaluation, correlation, analysis, and synthesis of the available data and information. The recommended values presented are uncorrected and also corrected for the thermal expansion of the material and cover the temperature range from 1 K to above the melting point into the molten state for aluminum and to 700 K for manganese. The estimated uncertainties in most of the recommended values are about ±2% to ±5%.

ISSN:0047-2689    

DOI:10.1063/1.555725

出版商:AIP    

年代:1984

数据来源: AIP

摘要:

The chemical thermodynamic properties of alkane isomer groups from C4H10to C10H22have been calculated from 200 to 1500 K from Scott’s tables of 1974. The numbers of stereoisomers in each isomer group have been checked and all of them have been included in the calculations. The following properties for alkane isomer groups have been calculated with energy in joules for a standard state pressure of 1 bar: standard heat capacity at constant pressure, standard entropy, standard enthalpy of formation, standard Gibbs energy of formation, standard enthalpy relative to isomer group at 298.15 K, and standard enthalpy relative to the elements at 298.15 K. Equilibrium mole fractions within isomer groups have been calculated for the ideal gas state from 200 to 1500 K. The four basic properties are given for all the individual isomers in joules for a standard state pressure of 1 bar. The properties of individual alkanes from C4H10to C10H22have also been calculated using the Benson group method and the resulting isomer group properties and equilibrium mole fractions have been calculated.

ISSN:0047-2689    

DOI:10.1063/1.555726

出版商:AIP    

年代:1984

数据来源: AIP

摘要:

The theoretical cross‐section data for single‐electron capture in collisions of multiply charged ions with nonhydrogenic atoms are compiled and their accuracy is assessed. The energy per unit mass range considered is from ∼1 eV/u to several MeV/u, u being the unified atomic mass unit. Accuracy is assessed using both pure theoretical arguments and comparison with experimental data, where available. A similar assessment is performed for the two‐electron capture cross‐section data in ion–atom collisions, as well as for single‐ and double‐charge exchange in ion–ion collisions.

ISSN:0047-2689    

DOI:10.1063/1.555727

出版商:AIP    

年代:1984

数据来源: AIP

摘要:

The CODATA Task Group on Thermophysical Properties is preparing a set of recommended values for the heat capacity, thermal expansion, and transport properties of key solids which are used in calibrating or checking measuring equipment. The present paper surveys selected data on heat capacity at constant pressureCpof copper from 1 to 1300 K and tungsten from 1 to 3400 K. Selected values are tabulated forCpand also for heat capacity at constant volumeCv. Interpolating functions are given forCp.

ISSN:0047-2689    

DOI:10.1063/1.555728

出版商:AIP    

年代:1984

数据来源: AIP

摘要:

This paper updates and extends previous critical evaluations of the kinetics and photochemistry of gas phase chemical reactions of neutral species involved in atmosphere chemistry [J. Phys. Chem. Ref. Data9, 295 (1980);11327 (1982)]. The work has been carried out by the authors under the auspices of the CODATA Task Group on Gas Phase Chemical Kinetics. Data sheets have been prepared for 256 thermal and photochemical reactions, containing summaries of the available experimental data with notes giving details of the experimental procedures. For each reaction, a preferred value of the rate coefficient at 298 K is given together with a temperature dependence where possible. The selection of the preferred value is discussed; and estimates of the accuracies of the rate coefficients and temperature coefficients have been made for each reaction. The data sheets are intended to provide the basic physical chemical data needed as input for calculations which model atmospheric chemistry. A table summarizing the preferred rate data is provided, together with an appendix listing the available data on enthalpies of formation of the reactant and product species.

ISSN:0047-2689    

DOI:10.1063/1.555721

出版商:AIP    

年代:1984

数据来源: AIP