ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
We have previously obtained parameter-free models of the overlap-induced, irreducible, ternary dipole components of three interacting H2 molecules, which were successful in reproducing existing measurements of the ternary collision-induced absorption in the H2 fundamental band [Phys. Rev. A 49, 4508 (1994)]. Here, we use these models to calculate the intensity of the triple Q1 transition, which has been recently observed in compressed hydrogen gas in absorption near 12 466 cm−1. Simultaneous transitions in three interacting H2 molecules are thought to arise from irreducible, ternary dipole components. We calculate an intensity of the triple Q1 transition in reasonable agreement with the measurement, within a factor of two or three for the three temperatures for which measurements exist. This fact demonstrates once more that the so-called antiparallel dipoles-induced dipole model, which is based on Jansen's one-effective electron approximation, is capable of describing ternary spectroscopic interactions in semi-quantitative detail. Other ternary, irreducible dipole components are shown to be less significant. © 1995 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.469661
