Instruments and methods of investigation

Shock compression of porous metals and silicates

 a,  b
a All-Russian Scientific Research Institute of Experimental Physics — Federal Nuclear Centre, prosp. Mira 37, Sarov, Nizhny Novgorod region, 607190, Russian Federation
b Sarov State Institute of Physics and Technology, ul. Dukhova 6, Sarov, Nizhny Novgorod region, 607186, Russian Federation

This paper reviews the results of experimental research on shock-compressed porous metals conducted in laboratory conditions and underground nuclear explosion environments. The general properties of shock adiabats are discussed. A rather simple wide-range equation of state is applied to describe the totality of test data. Porous metals and silicates are comparatively studied for, and found to qualitatively differ in, their behavior over a wide pressure range (tens of GPa). A possible explanation for the nonstandard behavior of silicates is that the Grüneisen coefficient in these states of matter can assume negative values at elevated pressures and temperatures. A similar anomaly is hypothesized to account for the superadiabatic density growth in the upper mantle of Earth.

Fulltext is available at IOP
PACS: 07.35.+k, 42.70.Ce, 62.50.−p, 91.60.Fe, 96.12.−a (all)
DOI: 10.3367/UFNe.0182.201208b.0829
Citation: Medvedev A B, Trunin R F "Shock compression of porous metals and silicates" Phys. Usp. 55 773–789 (2012)
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Received: 8th, August 2011, revised: 20th, December 2011, 20th, December 2011

Оригинал: Медведев А Б, Трунин Р Ф «Ударное сжатие пористых металлов и силикатов» УФН 182 829–846 (2012); DOI: 10.3367/UFNr.0182.201208b.0829

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