Viscosity Prediction of Nonpolar, Polar, and Associating Fluids over a WidePρTRange from a Modified Square Well Intermolecular Potential Model

1998 ◽  
Vol 37 (2) ◽  
pp. 652-659 ◽  
Author(s):  
Wayne D. Monnery ◽  
Anil K. Mehrotra ◽  
William Y. Svrcek
Keyword(s):  
Potential Model ◽  
Intermolecular Potential ◽  
Associating Fluids ◽  
Viscosity Prediction ◽  
Square Well

Viscosity prediction from a modified square well intermolecular potential model

1996 ◽  
Vol 117 (1-2) ◽  
pp. 378-385 ◽  
Author(s):  
Wayne D. Monnery ◽  
Anil K. Mehrotra ◽  
William Y. Svrcek
Keyword(s):  
Potential Model ◽  
Intermolecular Potential ◽  
Viscosity Prediction ◽  
Square Well

Ultraviolet absorption in proton-irradiated solid deuterium

1990 ◽  
Vol 68 (11) ◽  
pp. 1247-1250 ◽  
Author(s):  
J. A. Forrest ◽  
J. L. Hunt ◽  
R. L. Brooks
Keyword(s):  
Proton Beam ◽  
Potential Model ◽  
Ultraviolet Absorption ◽  
Broad Absorption ◽  
Electron Bubbles ◽  
Solid Deuterium ◽  
Square Well ◽  
Localized Electrons

A broad absorption near a wavelength of 350 nm in proton-irradiated solid deuterium at 4.2 K has been measured. The absorption is caused by the resonant detrapping of localized electrons from their quantum bubbles. The growth and decay of the absorption with onset and termination of the proton beam is shown to be consistent with similar timing measurements on other spectroscopic features associated with the localized electrons. A simple square-well potential model is used to estimate the depth of the well and the size of the electron bubbles.

Spectral lineshapes of collision-induced absorption (CIA) using isotropic intermolecular potential for N2-CH4

2021 ◽  
Vol 21 (4) ◽  
pp. 1063-1078
Author(s):  
M.S.A. El-Kader ◽  
G. Maroulis ◽  
T. Bancewicz
Keyword(s):  
Potential Model ◽  
Dipole Moments ◽  
Molecular Nitrogen ◽  
Intermolecular Potential ◽  
Gaseous Mixtures ◽  
Induced Absorption ◽  
Induced Dipole ◽  
Different Temperatures ◽  
Experimental Absorption ◽  
Good Agreement

Quantum mechanical lineshapes of collision-induced absorption (CIA) at different temperatures are computed for gaseous mixtures of molecular nitrogen and methane using theoretical values for the induced dipole moments and intermolecular potential as input. Comparison with theoretical absorption spectra shows satisfactory agreement. An empirical model of the dipole moment which reproduces the experimental spectra and the first three spectral moments more closely than the fundamental theory, is also presented. Good agreement between computed and experimental absorption lineshapes is obtained when a potential model which is constructed from the thermophysical and transport properties is used.

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