Single shot ultrafast dynamic ellipsometry (UDE) of laser-driven shocks in single crystal explosives
- Los Alamos National Laboratory
We report on the first experiments to measure states in shocked energetic single crystals with dynamic ellipsometry. We demonstrate that these ellipsometric techniques can produce reasonable Hugoniot values using small amounts of crystalline RDX and PETN. Pressures, particle velocities and shock velocities obtained using shocked ellipsometry are comparable to those found using gas-gun flyer plates and molecular dynamics calculations. The adaptation of the technique from uniform thin films of polymers to thick non-perfect crystalline materials was a significant achievement. Correct sample preparation proved to be a crucial component. Through trial and error, we were able to resolve polishing issues, sample quality problems, birefringence effects and mounting difficulties that were not encountered using thin polymer films.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 991257
- Report Number(s):
- LA-UR-09-04798; LA-UR-09-4798; TRN: US201021%%135
- Resource Relation:
- Conference: 2009 16th APS Shock Compression of Condesned matter Conference ; June 28, 2009 ; Nashville, TN, USA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Generalized Ellipsometry Measurements of Crystalline Thin Film and Bulk Tin Oxide
IN SITU ELLIPSOMETRY FOR SHOCK COMPRESSION MEASUREMENTS