Implementation of a Complex Multi-phase Equation of State for Cerium and Its Correlation With Experiment
Year: 2009
Type: conference-paper
Abstract: The complexity of cerium combined with its interesting material properties makes it a desirable material to examine dynamically. Characteristics such as the softening of the material before the phase change, low pressure solid‐solid phase change, predicted low pressure melt boundary, and the solid‐solid critical point add complexity to the construction of its equation of state. Currently, we are incorporating a feedback loop between a theoretical understanding of the material and an experimental understanding. Using a model equation of state for cerium we compare calculated wave profiles with experimental wave profiles for a number of front surface impact (cerium impacting a plated window) experiments. Using the calculated release isentrope we predict the temperature of the observed rarefaction shock. These experiments showed that the release state occurs at different magnitudes, thus allowing us to infer where dynamic γ–α phase boundary is.
Source: AIP conference proceedings
DOI: 10.1063/1.3295008
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2033548252