THz spectroscopy of liquid H2O and D2O

C. Rønne; P.-O. Åstrand; S.R. Keiding

doi:10.1103/PhysRevLett.82.2888

THz spectroscopy of liquid H₂O and D₂O

C. Rønne, P.-O. Åstrand, S.R. Keiding

Research output: Contribution to journal › Journal article › Research

Abstract

We have measured and analyzed the dielectric (0.1-2 THz) response of liquid H2O and D2O from 270 to 365 K. The response has been modeled using a Debye model with a fast and a slow decay time. By shifting the temperature scale for the slow decay time of D2O by 7.2 K we find identical behavior for D2O and H2O. The temperature dependence and isotope shift of the intermolecular structural relaxation characterized by the slow decay time can be modeled with a singular point at 228 K for H2O and 235 K for D2O. [S0031-9007(99)08896-1].

Original language	English
Journal	Physical Review Letters
Volume	82
Issue number	14
Pages (from-to)	2888-2891
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.82.2888
Publication status	Published - 1999

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title = "THz spectroscopy of liquid H2O and D2O",

abstract = "We have measured and analyzed the dielectric (0.1-2 THz) response of liquid H2O and D2O from 270 to 365 K. The response has been modeled using a Debye model with a fast and a slow decay time. By shifting the temperature scale for the slow decay time of D2O by 7.2 K we find identical behavior for D2O and H2O. The temperature dependence and isotope shift of the intermolecular structural relaxation characterized by the slow decay time can be modeled with a singular point at 228 K for H2O and 235 K for D2O. [S0031-9007(99)08896-1]. ",

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AB - We have measured and analyzed the dielectric (0.1-2 THz) response of liquid H2O and D2O from 270 to 365 K. The response has been modeled using a Debye model with a fast and a slow decay time. By shifting the temperature scale for the slow decay time of D2O by 7.2 K we find identical behavior for D2O and H2O. The temperature dependence and isotope shift of the intermolecular structural relaxation characterized by the slow decay time can be modeled with a singular point at 228 K for H2O and 235 K for D2O. [S0031-9007(99)08896-1].

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