Development of spectral interferometry for shock characterization in energetic materials

18th APS-SCCM; 24th AIRAPT

Kohl, I.^1 ; Jilek, B.^1 ; Farrow, D.^1 ; Urayama, J.^1 ; Kearney, S.^1

Sandia National Laboratories, Albuquerque

NM

87185, United States^1

关键词: Dynamic loadings;    Pentaerythritol tetranitrate;    Picosecond time;    Sandia National Laboratories;    Shock structure;    Short laser pulse;    Spatial resolution;    Spectral interferometry;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/2/022005/pdf
DOI  :  10.1088/1742-6596/500/2/022005

来源: IOP

【 摘 要 】

Ultrafast laser diagnostics have opened new pathways for investigation of shock physics and initiation of energetic materials. Short laser pulses on the time scale of 100s of picoseconds can be utilized for direct laser drive and coupled with imaging, spectroscopic, and interferometric tools at femtosecond scales for studies of dynamic loading during shock transit. At Sandia National Laboratories, we are implementing diagnostic platforms which extend the recent development of Ultrafast Shock Interrogation (USI) by Armstrong et al. [1] for table top measurement of Hugoniot/Equation-of-state data and characterization of shock structure with micron spatial resolution and picosecond time resolution. We present bare aluminium ablator data and initial data for pentaerythritol tetranitrate (PETN) as well as describe our experimental setup.