TITLE

Vitreous GeO[sub 2] response to shock loading

AUTHOR(S)
Liu, C.; Ahrens, Thomas J.; Brar, N. S.
PUB. DATE
April 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 505 Issue 1, p275
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Shock wave profiles in vitreous GeO[SUB2] (6.56 Mg/m[SUP3]) under planar loading were measured using stress gauges to 14 GPa. New and previous data yield Hugoniot: D = 0.974 (kin/s) + 1.711 u for shocks of 6 to 40 GPa. We show that the phase change from 4- to 6-fold coordination of Ge[SUP+4] with O[SUP-2] in vitreous GeO[SUB2] occurs from 4 to 15 GPa. Hugoniots of vitreous GeO[SUB2] and SiO[SUB2] are found to approximately coincide if the pressure in SiO[SUB2] is scaled by the ratio of SiO[SUB2] to GeO[SUB2] initial density.
ACCESSION #
5985535

 

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