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Accueil > Résultats Scientifiques > Publications 2017

Confinement Effects on the Nuclear Spin Isomer Conversion of H2O

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Authors : Pierre-Alexandre Turgeon, Jonathan Vermette, Gil, Alexandrowicz, Yoann Peperstraete, Laurent Philippe, Mathieu Bertin, Jean-Hugues Fillion, Xavier Michaut, and Patrick Ayotte
Abstract : The mechanism for interconversion between the nuclear spin isomers (NSI) of H2O remains shrouded in uncertainties. The temperature dependence displayed by NSI interconversion rates for H2O isolated in an argon matrix provides evidence that confinement effects are responsible for the dramatic increase in their kinetics with respect to the gas phase, providing new pathways for o-H2O↔p-H2O conversion in endohedral compounds. This reveals intramolecular aspects of the interconversion mechanism which may improve methodologies for the separation and the storage of NSI en route to applications ranging from magnetic resonance spectroscopy and imaging to interpretations of spin temperatures in the interstellar medium
Journal : J. Phys. Chem. JCP