| Issue |
Europhys. Lett.
Volume 38, Number 7, June I 1997
|
|
|---|---|---|
| Page(s) | 503 - 508 | |
| Section | Atomic, molecular and optical physics | |
| DOI | https://doi.org/10.1209/epl/i1997-00275-y | |
| Published online | 01 September 2002 | |
Rotational quenching of dipole-dipole interaction
Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands
Received:
23
January
1997
Accepted:
23
April
1997
Experiments based upon light-induced drift have yielded direct
information on the rotational-state dependence of intermolecular
interactions. Data were obtained for the change in collision rate ν
upon rovibrational (J, v) excitation of HF in Ar, 
, HCl, 
and 
. It is found that J and v have independent influences on
ν. For the dipole-dipole cases, ν decreases by up to 40% as
JHF increases from 0 to 6. This is attributed to the increased
averaging-out of the dipolar potential. A theoretical treatment based
upon the first Born approximation yields good agreement with the
HF-HCl data.
PACS: 34.20.Gj – Intermolecular and atom-molecule potentials and forces / 34.50.Ez – Rotational and vibrational energy transfer / 42.50.Vk – Mechanical effects of light on atoms, molecules, electrons, and ions
© EDP Sciences, 1997
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