Dynamic model of ortho-para conversion of water molecules

A quantum model of mutual conversion of spin isomers of the water molecule, involving a proton of a neighboring water molecule, is proposed. Molecules interact due to magnetic dipole-dipole forces which give rise to flip-flop processes. An additional adsorption energy different in magnitude and sign...

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Bibliographic Details
Published in:Bulletin of the Lebedev Physics Institute 2011-03, Vol.38 (3), p.76-79
Main Author: Konyukhov, V. K.
Format: Article
Language:English
Subjects:
Physics
Physics and Astronomy
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Summary:A quantum model of mutual conversion of spin isomers of the water molecule, involving a proton of a neighboring water molecule, is proposed. Molecules interact due to magnetic dipole-dipole forces which give rise to flip-flop processes. An additional adsorption energy different in magnitude and sign for singlets and triplets arises from a fast exchange of spin states within an acceptor molecule. A slower flip-flop process controls the simultaneous evolution of all three protons, which results in the transition between singlet and triplet states. Based on the developed model, experimental data on ortho-para-water are discussed.
ISSN:1068-3356
1934-838X
DOI:10.3103/S1068335611030043