We report new results on the pressure and temperature dependences of the pickoff annihilation rates of orthopositronium in ethane below its critical temperature. These data enable a detailed study of the recently discovered enhancement in the annihilation rates of orthopositronium in ethane near 115 ...
The critical pressure (Pc) and critical temperature (Tc) of shale gas depend on the characteristic pore size because of the importance of fluid–rock interactions in the matrix. This size dependency is neglected in highly permeable formations, where gas composition is only implemented because the ...
Below a critical temperature, the expectation values of the photon annihilation operator 〈â〉 and spin operator 〈Ŝy〉 become nonzero, signaling a spontaneous appearance of an electromagnetic field and polarization (or electric current) in thermal equilibrium. ...
The influence of sintering temperature on microstructural and superconducting properties of Gd-substituted (Bi,Pb)-2212 superconductor was investigated. It... S Vinu,P Sarun,R Shabna,... - 《Materials Letters》 被引量: 52发表: 2008年 Vapor−Liquid−Liquid Equilibria of Pentafluoroethane and ...
We conclude the paper with some comments concerning the temperature dependence of non-asymptotic effective critical-exponent values of fluids.关键词: Critical correlation function Critical exponents Gravity effects Isobutyric acid + water Light scattering ...
Liquid–vapor coexistence curves of ethane, ethylene, and xenon have been measured in the region of the critical point. Impurities present in the ethane and ethylene gave retrograde systems; reduction of the impurities yielded coexistence curves which were flat along the temperature axis to 0.001 °...
Models of magnetic field generation in partly stable planetary cores: Applications to Mercury and Saturn A substantial part of Mercury's iron core may be stably stratified because the temperature gradient is subadiabatic. A dynamo would operate only in a deep ... UR Christensen,J Wicht - 《Icar...
Measurements are reported of the intensity and the angular dissymmetry of light scattered from 'quasi-binary' and binary mixtures of ethane and heavier hydrocarbons, that have varying widths of the three-phase region ( ΔT). The critical... A Kumar - 《Physica A Statistical Mechanics & Its Ap...
Table 2. Physical properties of supercritical solvents6–8,11,12,16,30,31 FluidNormal boiling point (°C)Critical properties Pressure (MPa)Temperature (°C)Density (g cm−3) Carbon dioxide −78.5 7.38 31.1 0.468 Ethane 88.0 4.88 32.2 0.203 Ethylene −103.7 5.04 9.3 0.200 Propane −44.5...
designated by the refrigeration industry as the refrigerants R124, R143a, R236ea, R236fa, R235ca, R245fa, and E125, we determined the critical temperatures Tc (ITS-90), the capillary rise, and the refractive indices of the liquid and vapor phases in the temperature range from 20°C to ...