Electrophysical properties of water and ice under isentropic compression to megabar pressures


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Аннотация

The relative permittivity and specific conductivity of water and ice are measured under isentropic compression to pressures above 300 GPa. Compression is initiated by a pulse of an ultrahigh magnetic field generated by an MK-1 magnetocumulative generator. The sample is placed in a coaxial compression chamber with an initial volume of about 40 cm3. The complex relative permittivity was measured by a fast-response reflectometer at a frequency of about 50 MHz. At the compression of water, its relative permittivity increases to ε = 350 at a pressure of 8 GPa, then drops sharply to ε = 140, and further decreases smoothly. It is shown that measurements of the relative permittivity under isentropic compression make it possible to determine interfaces between ordered and disordered phases of water and ice, as well as to reveal features associated with a change in the activation energy of defects.

Авторлар туралы

S. Belov

Russian Federal Nuclear Center VNIIEF

Email: kudasov@ntc.vniief.ru
Ресей, Sarov, Nizhny Novgorod region, 607188

G. Boriskov

Russian Federal Nuclear Center VNIIEF

Email: kudasov@ntc.vniief.ru
Ресей, Sarov, Nizhny Novgorod region, 607188

A. Bykov

Russian Federal Nuclear Center VNIIEF

Email: kudasov@ntc.vniief.ru
Ресей, Sarov, Nizhny Novgorod region, 607188

M. Dolotenko

Russian Federal Nuclear Center VNIIEF

Email: kudasov@ntc.vniief.ru
Ресей, Sarov, Nizhny Novgorod region, 607188

N. Egorov

Russian Federal Nuclear Center VNIIEF

Email: kudasov@ntc.vniief.ru
Ресей, Sarov, Nizhny Novgorod region, 607188

A. Korshunov

Russian Federal Nuclear Center VNIIEF

Email: kudasov@ntc.vniief.ru
Ресей, Sarov, Nizhny Novgorod region, 607188

Yu. Kudasov

Russian Federal Nuclear Center VNIIEF; Sarov Physical Technical Institute; National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)

Хат алмасуға жауапты Автор.
Email: kudasov@ntc.vniief.ru
Ресей, Sarov, Nizhny Novgorod region, 607188; Sarov, Nizhny Novgorod region, 607190; Moscow, 115409

I. Makarov

Russian Federal Nuclear Center VNIIEF

Email: kudasov@ntc.vniief.ru
Ресей, Sarov, Nizhny Novgorod region, 607188

V. Selemir

Russian Federal Nuclear Center VNIIEF; Sarov Physical Technical Institute; National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)

Email: kudasov@ntc.vniief.ru
Ресей, Sarov, Nizhny Novgorod region, 607188; Sarov, Nizhny Novgorod region, 607190; Moscow, 115409

A. Filippov

Russian Federal Nuclear Center VNIIEF

Email: kudasov@ntc.vniief.ru
Ресей, Sarov, Nizhny Novgorod region, 607188

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