Measurement of the principal quasi-isentrope of lead to ~3Mbar using the "Z" machine

18th APS-SCCM; 24th AIRAPT

Rothman, S.^1 ; Davis, J.-P.^2 ; Gooding, S.^1 ; Knudson, M.^2 ; Ao, T.^2

AWE Aldermaston, Reading

RG7 4PR, United Kingdom^1

Sandia National Laboratory, Albuquerque

NM

87185, United States^2

关键词: Compression pulse;    Intermediate stress;    Lagrangian analysis;    Longitudinal stress;    Multiple points;    Single sample;    Surface velocity;    Vertical positions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/3/032016/pdf
DOI  :  10.1088/1742-6596/500/3/032016

来源: IOP

【 摘 要 】

We have measured the principal quasi-isentrope of pure lead to ∼3 Mbar, using magnetically-driven ramp compression on SNL's "Z" machine. Multiple point-VISARs were used to measure the surface velocities of the compressed samples, and iterative Lagrangian analysis was used to find the wave speed as a function of ramp velocity to an accuracy of