Title: Ab initio pair potential energy curve for the argon atom pair and thermophysical properties of the dilute argon gas. I. Argon-argon interatomic potential and rovibrational spectra
Authors: Jäger, Benjamin
Hellmann, Robert 
Bich, Eckard
Vogel, Eckhard
Language: eng
Keywords: Argon ab initio pair potential;Argon analytical potential function;Rovibrational spectra
Issue Date: 19-Oct-2009
Document Type: Article
Journal / Series / Working Paper (HSU): Molecular Physics
Volume: 107
Issue: 20
Page Start: 2181
Page End: 2188
An argon-argon interatomic potential energy curve was derived from quantum-mechanical ab initio calculations using basis sets of up to d-aug-cc-pV(6+d)Z quality supplemented with bond functions and ab initio methods up to CCSDT(Q). In addition, corrections for relativistic effects were determined. An analytical potential function was fitted to the ab initio values and utilised to compute the rovibrational spectrum. The quality of the interatomic potential function was tested by comparison of the calculated spectrum with experimental ones and those derived from other potentials of the literature. In a following paper the new interatomic potential is used to determine selected thermophysical properties of argon by means of quantum-statistical mechanics and the corresponding kinetic theory considering two-body and three-body interactions.
Organization Units (connected with the publication): Universität Rostock
ISSN: 00268976
Publisher DOI: 10.1080/00268970903213305
Appears in Collections:6 - Bibliographic Data - Publications of the HSU Researchers (before HSU)

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