Publishing House SB RAS:

Publishing House SB RAS:

Address of the Publishing House SB RAS:
Morskoy pr. 2, 630090 Novosibirsk, Russia



Advanced Search

Combustion, Explosion and Shock Waves

2013 year, number 3

PHASE TRANSITION IN PYROXENITE UNDER SHOCK LOADING

S. A. Bordzilovskii, S. M. Karakhanov, A. I. Turkin, A. S. Yunoshev, V. M. Titov
Keywords: shock waves, pyroxenite, pyroxene, phase transition, VISAR, laser interferometry
Pages: 367-373

Abstract

Shock loading of natural pyroxenite samples and synthetic pyroxene samples sintered from a mixture of oxides with stoichiometry Mg0.9Fe0.1SiO3 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 ≈ 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.