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Phase transition in pyroxenite under shock loading
S. A. Bordzilovskiiab, S. M. Karakhanova, A. I. Turkinc, A. S. Yunoshevab, V. M. Titova a Lavrentyev Institute of Hydrodynamics of Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
b Novosibirsk State University, Novosibirsk, 630090, Russia
c Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
Abstract:
Shock loading of natural pyroxenite samples and synthetic pyroxene samples sintered from a mixture of oxides with stoichiometry Mg$_{0.9}$Fe$_{0.1}$SiO$_3$ was investigated. X-ray analysis of the recovered material was performed. Particle velocity profiles recorded by laser interferometry indicate the existence of a phase transition at a pressure of $\approx$ 60 GPa. At this pressure, the Lagrangian sound velocity in the shock-loaded samples of natural pyroxenite is 13.9 km/s. From an evaluation of the compression, the Eulerian sound velocity is 9.4 km/s.
Keywords:
VISAR, shock waves, pyroxenite, pyroxene, phase transition, VISAR, laser interferometry.
Received: 17.05.2012
Citation:
S. A. Bordzilovskii, S. M. Karakhanov, A. I. Turkin, A. S. Yunoshev, V. M. Titov, “Phase transition in pyroxenite under shock loading”, Fizika Goreniya i Vzryva, 49:3 (2013), 122–129; Combustion, Explosion and Shock Waves, 49:3 (2013), 367–373
Linking options:
https://www.mathnet.ru/eng/fgv49 https://www.mathnet.ru/eng/fgv/v49/i3/p122
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