Close coupling results for inelastic collisions of NH3 and Ar.  A stringent test of a spectroscopic potential.
We have calculated state-to-state total cross sections for rotational excitation and inversion of NH3 by collisions with Ar using the close coupling method. The Ar-NH3 interaction potential has been obtained from a fit to the spectrum of this van der Waals molecule. The calculated cross sections agree to within about 30% with the measured values; the estimated error in the latter is 10% to 20%.
van der Sanden
G C
GC
Institute of Theoretical Chemistry, University of Nijmegen, Toerooiveld, The Netherlands.
Wormer
P E
PE
van der Avoird
A
A
Schmuttenmaer
C A
CA
Saykally
R J
RJ
D000641:Ammonia / Q000737:chemistry*; D001128:Argon / Q000737:chemistry*; D008958:Models, Molecular; D055585:Physical Phenomena; D010825:Physics; D012984:Software
D001128:Argon; D000641:Ammonia