Quantum effects in dipolar gases

1973 ◽  
Vol 26 (4) ◽  
pp. 855 ◽  
Author(s):  
A Pompe ◽  
TH Spurling
Keyword(s):  
Water Vapour ◽  
Room Temperature ◽  
Virial Coefficient ◽  
Second Virial Coefficient ◽  
Quantum Effects ◽  
Second Order ◽  
Quantum Corrections ◽  
First Order ◽  
Dipolar Gases

The second-order translational and rotational quantum corrections to the second virial coefficient for the Stockmayer potential have been derived and numerical values computed with parameters appropriate for water vapour. The second-order corrections amount to about 10% of the first-order corrections at room temperature.

Contributions of Nonspherical Interactions to the Second Virial Coefficients of H2 and HD Gases

1971 ◽  
Vol 49 (20) ◽  
pp. 2547-2551 ◽  
Author(s):  
Asit B. Rakshit ◽  
Sucheta Chowdhury
Keyword(s):  
Virial Coefficient ◽  
Second Virial Coefficient ◽  
Virial Coefficients ◽  
Quantum Effects ◽  
Quantum Corrections ◽  
Second Virial Coefficients

The second virial coefficient B(T) of H2 and HD gases, including the quantum corrections, have been evaluated by considering spherical as well as the different nonspherical interactions arising mainly from the permanent and induced electric moments of the molecules. The calculations are valid at intermediate temperatures where the quantum effects are comparatively small. For H2 the present results have been compared with the earlier ones of Wang Chang.

Reactions with half-lives of several years

1964 ◽  
Vol 17 (4) ◽  
pp. 406 ◽  
Author(s):  
GA Bottomley ◽  
GL Nyberg
Keyword(s):  
Activation Energy ◽  
Thermal Decomposition ◽  
Gas Phase ◽  
Virial Coefficient ◽  
Energy Equation ◽  
Second Virial Coefficient ◽  
First Order ◽  
First Order Kinetics ◽  
Reciprocal Temperature ◽  
Temperature Activation

The gas-phase thermal decomposition of dimethyldiazirine, (CH3)2CN2, at very slow rates has been investigated using precision gas-volumetric techniques previously applied to second virial coefficient studies. At 50-70� the first-order kinetics correspond to half-lives about 0.3-3.0 years. The present results, together with data obtained by other workers using conventional apparatus at 124-174�, fit a single log rate-reciprocal temperature activation energy equation.

Methane-water cross second virial coefficient with quantum corrections from an ab initio potential

2006 ◽  
Vol 125 (1) ◽  
pp. 014314 ◽  
Author(s):  
Omololu Akin-Ojo ◽  
Allan H. Harvey ◽  
Krzysztof Szalewicz
Keyword(s):  
Ab Initio ◽  
Virial Coefficient ◽  
Second Virial Coefficient ◽  
Quantum Corrections
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