Journal ArticleDOI
Dielectric Properties of Ice and Solid D2O
Robert P. Auty,Robert H. Cole +1 more
TLDR
In this article, complex dielectric constants have been measured for ice from the melting point to −65°C and for solid D2O to −35°C, by a combination of bridge and transient methods.Abstract:
Complex dielectric constants have been measured for ice from the melting point to −65°C, and for solid D2O to −35°C, by a combination of bridge and transient methods. For both, the dispersion is described by the simple Debye formula, and the relaxation times τ by the simple rate expression τ = A exp(B/RT). For ice, A = 5.3×10−16 sec, B = 13.2 kcal/mole; and for solid D2O, A = 7.7×10−16 sec, B = 13.4 kcal/mole. The equilibrium dielectric constant for ice is 91.5 at 0°C and increases at lower temperatures; the values for solid D2O are only slightly smaller. Measures taken to minimize errors from voids in the sample and direct current conductance are discussed.read more
Citations
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Journal ArticleDOI
Water in the hydrated protein powders: Dynamic and structure.
TL;DR: This approach enables to characterize the microscopic relaxation mechanism of the dynamics of hydration water on the different structures of the protein, and is also capable of characterizing not only hydrated proteins but also polymer-water systems.
Journal ArticleDOI
Radar Signal Penetration and Horizons Detection on Europa Through Numerical Simulations
Federico Di Paolo,Sebastian Lauro,Davide Castelletti,Giuseppe Mitri,Francesca Bovolo,Barbara Cosciotti,Elisabetta Mattei,Roberto Orosei,Claudia Notarnicola,Lorenzo Bruzzone,Elena Pettinelli +10 more
TL;DR: The authors' simulations indicate that a subsurface radar operating at 9 MHz can identify shallow-buried targets and to detect the ice/water interface in various thermal scenarios.
Journal ArticleDOI
Calorimetric study of water two-dimensionally condensed on the homogeneous surface of a solid
TL;DR: In this article, the state of water adsorbed on ZnO, Cr 2 O 3 and SrF 2 surfaces has been studied by a direct calorimetric method.
Journal ArticleDOI
Supercooled interfacial water in fine grained soils probed by dielectric spectroscopy
Andreas Lorek,Norbert Wagner +1 more
TL;DR: In this article, a parallel plate capacitor has been developed to obtain isothermal dielectric spectra of fine-grained soils in the frequency range from 10 Hz to 1.1 MHz at Martian-like temperatures down to −70 °C.
References
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Journal ArticleDOI
The Dielectric Polarization of Polar Liquids
TL;DR: In this paper, an extension of the Onsager theory of dielectric polarization is presented, which is applied to liquid water under the assumption of tetrahedral coordination and directed bonds between neighboring molecules.
Journal ArticleDOI
A Wide Range Capacitance‐Conductance Bridge
Robert H. Cole,Paul M. Gross +1 more
TL;DR: In this paper, the authors describe a bridge for reasonably accurate measurement by direct balance of capacitance and conductance in the frequency range 50 c/sec. to 5 cm/sec., and over most of this range is essentially direct reading in the two admission components with negligible unbalance from lead effects or guard circuits of the unknown.
Journal ArticleDOI
A Calculation of the Static Dielectric Constant of Ice
TL;DR: In this article, a calculation of the static dielectric constant of ice using only simple molecular data and with well-defined assumptions as to the possibilities of molecular movement in the crystal is presented.
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