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Shock experiments in range of 10–45 GPa with small multidomain magnetite in porous targets
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SYSNO ASEP 0383522 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Shock experiments in range of 10–45 GPa with small multidomain magnetite in porous targets Author(s) Kohout, Tomáš (GLU-S) RID, SAI, ORCID
Pesonen, L. J. (FI)
Deutsch, A. (DE)
Wünnemann, K. (DE)
Nowka, D. (DE)
Hornemann, U. (DE)
Heikinheimo, E. (FI)Source Title Meteoritics & Planetary Science. - : Wiley - ISSN 1086-9379
Roč. 47, č. 10 (2012), s. 1671-1680Number of pages 10 s. Publication form WWW - WWW Language eng - English Country US - United States Keywords shock ; magnetite ; magnetism ; magnetic properties ; density porosity Subject RIV BN - Astronomy, Celestial Mechanics, Astrophysics CEZ AV0Z30130516 - GLU-S (2005-2011) UT WOS 000310869800009 EID SCOPUS 84869054127 DOI 10.1111/maps.12003 Annotation Physical properties of multidomain magnetite-bearing porous pellets shocked up to 45 GPa were measured. The results show general magnetic softening as a result of shock. However, a relative magnetic hardening trend and slight magnetic susceptibility decrease is observed with increasing pressure among shocked samples. Initially, the shock also seems to cause a slight decrease in porosity, but at higher shock pressures macroscopic porosity increases progressively in our pellets. The microscopic porosity remains almost unchanged. Since our samples have distinctly higher initial porosity compared with samples used in previous studies, our results may be representative for impacts into highly porous magnetite-bearing sedimentary or volcanic rocks and are relevant to impacts into such target rocks on Earth and Mars. Workplace Institute of Geology Contact Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Year of Publishing 2013
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