A finite element study of a high-pressure/high-temperature cell for simultaneous X-ray and ultrasonic measurement |
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| Authors: | Régis Debord Dominique Leguillon Gérard Syfosse Myriam Fischer |
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| Institution: | 1. Université P. et M. Curie, Physique des Milieux Condensés (UMR 7602) , B77, 4 Place Jussieu, 75252, Paris, France rd@pmc.jussieu.fr;3. Université Pierre et Marie Curie, Laboratoire de Modélisation Mécanique , 8 rue du capitaine Scott, 75015, Paris, France;4. Université P. et M. Curie, Physique des Milieux Condensés (UMR 7602) , B77, 4 Place Jussieu, 75252, Paris, France |
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| Abstract: | In this study, we measured the viscosity of liquid sulfur at 4.5 GPa in the L and L′ regions at 1000 K and 1373 K, respectively, in a 1000-ton cubic anvil press using modified falling sphere viscometry. The viscosity values in the L and L′ regions are 0.140±0.023 Pa s and 0.050±0.006 Pa s, respectively. The lower viscosity in the L′ region may be due to the effect of higher temperature alone or in addition to a hidden contribution from the L–L′ transition. |
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| Keywords: | High pressure–high temperature Finite-element calculations |
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