Computational tests of the factorization of cross sections in the sudden approximation

1979 ◽  
Vol 37 (2) ◽  
pp. 265-270 ◽  
Author(s):  
Z.H. Top ◽  
D.J. Kouri
Keyword(s):  
Cross Sections ◽  
Sudden Approximation

Helium Atom Scattering from C2H6, F2HCCH3, F3CCH2F and C2F6 in Crossed Molecular Beams

1997 ◽  
Vol 52 (10) ◽  
pp. 695-701
Author(s):  
Markus Hammer ◽  
Wolfhart Seidel
Keyword(s):  
Cross Sections ◽  
Infinite Order ◽  
Virial Coefficients ◽  
Molecular Beams ◽  
Helium Atom Scattering ◽  
Helium Atoms ◽  
Atom Scattering ◽  
Sudden Approximation ◽  
Scattering Systems ◽  
Macroscopic Parameters

Abstract Rotationally unresolved differential cross sections were measured in crossed molecular beam experiments by scattering Helium atoms from Ethane, 1,1-Difluoroethane, 1,1,1,2-Tetrafluoroethane and Hexafluoroethane. The damping of observed diffraction oscillations was used to extract anisotropic interaction potentials for these scattering systems applying the infinite order sudden approximation (IOSA). Binary macroscopic parameters such as second heterogeneous virial coefficients and the coefficients of diffusion and viscosity were computed from these potentials and compared to results from macroscopic experiments.

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