Two reorientational relaxation processes have been suggested to occur in liquid water. However, while there is general agreement on the value of the slow Debye relaxation time constant, a question arises on the effective time scale of the fast relaxation process, that has been reported to occur in the 0.2-1 ps range at room temperature. It is shown here that, the combined analysis of the available microwave and far-infrared dielectric spectroscopy literature data, suggests the existence of three relaxation processes in H2O(l). Such interpretation is consistent with the most recent literature on the rotational dynamics of such liquid. © 2007 Elsevier B.V. All rights reserved.
Which is the effective time scale of the fast Debye relaxation process in water?
Beneduci, A.
2008-01-01
Abstract
Two reorientational relaxation processes have been suggested to occur in liquid water. However, while there is general agreement on the value of the slow Debye relaxation time constant, a question arises on the effective time scale of the fast relaxation process, that has been reported to occur in the 0.2-1 ps range at room temperature. It is shown here that, the combined analysis of the available microwave and far-infrared dielectric spectroscopy literature data, suggests the existence of three relaxation processes in H2O(l). Such interpretation is consistent with the most recent literature on the rotational dynamics of such liquid. © 2007 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
