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Title: FAR-INFRARED SPECTROSCOPY OF THE H{sub 2}-O{sub 2} VAN DER WAALS COMPLEX

We report the far infrared spectrum of H{sub 2}-O{sub 2} at 80 K in the vicinity of the pure rotational bands of H{sub 2}. Sharp peaks were observed, which correspond to end-over-end rotational transitions of the H{sub 2}-O{sub 2} molecular complex, that are superimposed over broad collision induced absorptions. We find that the maximum value of the end-over-end rotational quantum number that is bound is seven, which is two more than supported by a recently reported ab initio H{sub 2}-O{sub 2} potential energy surface. The rotational spectrum reported here should therefore greatly help in refining this surface, which is used to calculate scattering processes relevant to the chemistry occurring in interstellar molecular clouds.
Authors:
; ; ;  [1]
  1. Department of Chemistry, University of Adelaide, SA 5005 (Australia)
Publication Date:
OSTI Identifier:
22364482
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 799; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ABSORPTION SPECTROSCOPY; HYDROGEN; INFRARED SPECTRA; INTERSTELLAR SPACE; MOLECULES; POTENTIAL ENERGY; ROTATIONAL STATES; SCATTERING; VAN DER WAALS FORCES