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Title: Interacting He and Ar atoms: Revised theoretical interaction potential, dipole moment, and collision-induced absorption spectra

Coupled cluster quantum chemical calculations of the potential energy surface and the induced dipole surface are reported for the He–Ar van der Waals collisional complex. Spectroscopic parameters are derived from global analytical fits while an accurate value for the long-range dipole coefficient D{sub 7} is obtained by perturbation methods. Collision-induced absorption spectra are computed quantum mechanically and compared with existing measurements.
Authors:
 [1] ;  [2]
  1. University Kaiserslautern, FB Chemie, Kaiserslautern (Germany)
  2. Physics Department, University of Texas, Austin, Texas 78712-0264 (United States)
Publication Date:
OSTI Identifier:
22489611
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 143; Journal Issue: 11; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION SPECTRA; COLLISIONS; COMPARATIVE EVALUATIONS; DIPOLE MOMENTS; DIPOLES; INTERACTIONS; PERTURBATION THEORY; POTENTIAL ENERGY; QUANTUM MECHANICS; SURFACES; VAN DER WAALS FORCES