Experimental and Theoretical Studies on the DC Conductivity of Ice

Kahane, Ahuvia

doi:10.1007/978-1-4899-5573-9_36

Cited by 7 publications

(2 citation statements)

References 4 publications

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“…However we can observe that, far from the cross-over, where CI oo D ~ CIsD in Equation (8), 7 z and CI ooz have the same activation energy. The values we found for 7 z above and below Tc = 190 K, are 0 .64 eV and 0.38 eV, corresponding to 14.7 kcal/mol and 8.7 kcal /mol respectively, and are in good agreement with those obtained by Kahane (1969) for CIsD (9 kcal/mol and 14 kcal /mol) by the use of ion-exchange membranes. Also the temperature at which the temperature dependence of CIsD changes, in Figure 3 of his paper, is very similar to our Tc.…”

Section: Methodssupporting

confidence: 89%

Measurements of the Electrical Properties of Ice Ih Single Crystals by Admittance and Thermally Stimulated Depolarization Techniques

Loria¹,

Mazzega²,

Pennino³

et al. 1978

J. Glaciol.

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Ice Ih single crystals were investigated by complex admittance and thermally stimulated depolarization (TSD) techniques, in the relaxation-time ranges 10–5–10 s and 10–104 s respectively.The relaxation spectrum was resolved and three components of it were studied. Second-order kinetics had to be assumed for two of the TSD spectra to obtain Arrhenius-type relaxation times. The “Debye spectrum” had an activation energy for the relaxation time of 0.64 eV at the high temperatures and its dielectric strength revealed a possible defect cross-over at Tc = 190 K. Far below this temperature the activation energy was 0.38 eV, that is about half of that necessary for a pair of ion defects to form. In comparison with the results of other authors, a lower concentration of ionic defects, or possibly of Bjerrum–ion aggregates, was deduced to occur in our crystals.Inert-gas host molecules were proposed as a possible origin of the two other spectra, having relaxation times shorter than the “Debye spectrum” and energies of 0.33 eV and 0.37 eV. Moreover the 0.33 eV spectrum, whose dielectric strength appears at a temperature below Tc, might alternatively be related to the cross-over of the “Debye spectrum”.

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Section: Methodssupporting

confidence: 89%

Measurements of the Electrical Properties of Ice Ih Single Crystals by Admittance and Thermally Stimulated Depolarization Techniques

Loria¹,

Mazzega²,

Pennino³

et al. 1978

J. Glaciol.

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“…which will give out or receive protons. Work to develop such contacts was done by the group in Grenoble using ion-exchange membranes (Kahane, 1969) and ionized hydrogen gas (Auvert and Kahane, 1973), Humbel and others, 1953. ) and also by the group in Munich using hydrogen-loaded palladium Riehl, 1965, 1966).…”

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confidence: 99%

Fifty years of progress in ice physics

Glen

1987

J. Glaciol.

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ABSTRACT. Our understanding of the basic physics underlying the properties of ice has dramatically changed during the last half century. At the beginning of this period it was known that the water molecules in ice were arranged with tetrahedral hydrogen bonding, and it had just been established that the hydrogens were not crystallographically arranged on these bonds; however, the way in which water molecules could re-orient was unknown and the implications of this for the mechanical properties and hence for glacier flow were unexplored. The suggestion of electrical point defects in ice, the L and D defects of Bjerrum and the ionic defects, pointed the way to an understanding first of the dielectric relaxation and electrical conductivity of ice and then to a possible interaction between these electrical properties and the movement of dislocations, and hence the plastic deformation of ice.

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8.5 References for 8

Miller¹

Landolt-Börnstein - Group v Geophysics

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Experimental and Theoretical Studies on the DC Conductivity of Ice

Cited by 7 publications

References 4 publications

Measurements of the Electrical Properties of Ice Ih Single Crystals by Admittance and Thermally Stimulated Depolarization Techniques

Measurements of the Electrical Properties of Ice Ih Single Crystals by Admittance and Thermally Stimulated Depolarization Techniques

Fifty years of progress in ice physics

8.5 References for 8

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