Birefringence measurements in single crystal sapphire and calcite shocked along the a axis
| Autor: | Daniel E. Eakins, Gareth R. Tear, David J. Chapman, William G. Proud |
|---|---|
| Přispěvatelé: | Imperial College Trust, AWE Plc |
| Rok vydání: | 2017 |
| Předmět: |
Calcite
Science & Technology Birefringence Materials science business.industry Physics Molecular physics Shock (mechanics) chemistry.chemical_compound symbols.namesake Optics Physics Condensed Matter chemistry Flow birefringence Physical Sciences Sapphire symbols Particle COMPRESSION Particle velocity business Doppler effect |
| Zdroj: | Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter |
| ISSN: | 0094-243X |
| DOI: | 10.1063/1.4971561 |
| Popis: | Calcite and sapphire were shock compressed along the ⟨101⎯⎯0⟩ direction (a axis) in a plate impact configuration. Polarimetery and Photonic Doppler Velocimetery (PDV) were used to measure the change in birefringence with particle velocity in the shock direction. Results for sapphire agree well with linear photoelastic theory and current literature showing a linear relationship between birefringence and particle velocity up to 310 m s−1. A maximum change in birefringence of 5% was observed. Calcite however showed anomolous behaviour with no detectable change in birefringence (less than 0.1%) over the range of particle velocities studied (up to 75 m s−1). |
| Databáze: | OpenAIRE |
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