Analysis of temperature measurements at lead(Pb) / transparent window interface under shock compression

18th APS-SCCM; 24th AIRAPT

Robert, G.^1 ; Gillot, F.^1 ; Bénier, J.^1

CEA/DAM/DIF, F-91297, France^1

关键词: Equation of state;    Heated material;    Pyrometric measurements;    Shock adiabats;    Shock compressions;    Thin layers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/3/032015/pdf
DOI  :  10.1088/1742-6596/500/3/032015

来源: IOP

【 摘 要 】

In this paper, we show that if the temperatureAobtained by a pyrometric measurement on a shock-heated material can be reached with a good precision (∼5%), its transformation into a useful temperatureTto constrain an equation of state is not straightforward. The effects of interface, in particular the adaptation of impedance, can create a difference betweenAandTof more than 10%. This impedance correction depends on the shock adiabat of the glue, not known for thin layers of few |am but also of the equation of state of the material and of its lines of phase transition.