摘要:

Experimental data on the coexistence curves for nine binary liquid systems, which meet strict criteria of precision, purity of components, and experimental method, are analyzed in the neighborhood of the critical point. The data are examined in terms of a general equation of state which is nonanalytic at the critical point. The results of the computer analysis using weighted non‐linear least squares procedures present evidence that some symmetry features of classical equations of state remain; and within the experimental errors in the data all systems are consistent with the critical exponent &bgr;=0.34. The asymptotic behavior of the diameter is examined and evidence is provided for a curved diameter in some cases; however, it is concluded that the available data are not extensive enough to make a firm conclusion concerning the shape of the diameter. Experimental methods are briefly criticized and mention is made of the experimental direction that future work should take. Special attention is given to estimating the reliability of the conclusions that may be drawn from a given set of data.

ISSN:0047-2689    

DOI:10.1063/1.3253124

出版商:AIP    

年代:1973

数据来源: AIP

摘要:

Rate constants for the reactions of atomic oxygen (O3P) with organic compounds in the gas phase are compiled and critically evaluated. Data are given here as originally reported in the literature for a total of 107 organic reactants. From a critical evaluation of the data, recommended values for rate constants are given over specified temperature intervals, and where possible at 298 K and 1000 K. Estimated error limits are assigned to all recommended values.

ISSN:0047-2689    

DOI:10.1063/1.3253125

出版商:AIP    

年代:1973

数据来源: AIP

摘要:

Descriptions of the first spectra of neon, argon, and xenon 136, comprising calculated wavelengths, calculated wave numbers, relative intensities, and classifications, are presented. The calculated values are derived from currently best established energy levels, obtained mostly from interferometric observations and adopted as standards by the International Astronomical Union. All listed lines have actually been observed. This paper makes available a compilation of all results previously presented in fragmentary or relatively inaccessible reports with intensities normalized to as nearly a uniform scale as the various observations permit.

ISSN:0047-2689    

DOI:10.1063/1.3253126

出版商:AIP    

年代:1973

数据来源: AIP

摘要:

A comprehensive compilation is given of elastic properties of iron‐nickel alloys. When sufficient data exist, preferred values are recommended. This compilation covers, besides pure iron and pure nickel, the entire binary composition range, both b.c.c. and f.c.c. phases. Elastic constants included are: Young's modulus, shear modulus, bulk modulus (reciprocal compressibility), Poisson's ratio, and single‐crystal elastic stiffnesses, both second‐order and higher‐order. Data are compiled for variation of elastic constants with composition, temperature, pressure, magnetic field, mechanical deformation, annealing, and crystallographic transitions. An overview is given from the vantage points of the electron theory of metals, elasticity theory, and crystallographic theory. Also included are discussions of iso‐thermal and adiabatic elastic constants, interrelationships among engineering elastic constants, computation of the latter from single‐crystal elastic stiffnesses, and similar topics. Where key data have not been measured, they were generated if possible from existing data using standard formulae. Other gaps, both theoretical and experimental, in the elastic properties of iron‐nickel alloys are indicated. A few theoretical results are included where experimental data are nonexistent or scarce. A semantic scheme is proposed for distinguishing elastic constants of solids.

ISSN:0047-2689    

DOI:10.1063/1.3253127

出版商:AIP    

年代:1973

数据来源: AIP

摘要:

The viscosity and thermal conductivity coefficients of dilute argon, krypton, and xenon are reviewed and tables of recommended values presented. The tables were generated using the appropriate kinetic theory expressions with them‐6–8 potential. The temperature range covers from about one‐half critical temperature to 2000 K for each gas. A general estimate of the accuracy is one percent increasing to one and three‐quarters percent for temperatures above 1000 K.

ISSN:0047-2689    

DOI:10.1063/1.3253128

出版商:AIP    

年代:1973

数据来源: AIP

摘要:

A survey, comparison, and critical analysis is presented of data compiled from the scientific literature concerning copper self‐diffusion. Topics include volume diffusion, dislocation pipe diffusion, surface diffusion, sintering, electromigration, thermomigration, pressure effect on diffusion, strain‐enhanced diffusion, nuclear magnetic resonance measurements of solid state diffusion and diffusion in molten copper. An extensive bibliography is presented along with figures, tabular presentation of data, and discussion of results.

ISSN:0047-2689    

DOI:10.1063/1.3253129

出版商:AIP    

年代:1973

数据来源: AIP