Development of Laser-Driven Flyer Techniques for Equation-of-State Studies of Microscale Materials
Abstract
Experimental methods utilizing laser-acceleration of flyer plates and high-speed velocity interferometry are being developed for investigation of the dynamic material properties of microscale materials (e.g., polycrystalline silicon). Hugoniot measurements are performed using reverse impact of the laser-driven flyer onto a known witness plate material (e.g., fused silica). A line-imaging optically recording velocity interferometer system (ORVIS) can be used to record both pre-impact flyer velocity and post-impact interface velocity as well as to determine the geometry (along a line segment) of the flyer at impact, providing a viable approach for direct state measurements. Results for 6061-T6 aluminum flyers are consistent with the well-established Hugoniot properties of this material. Methods for fabricating flyers containing thin layers of polycrystalline silicon and for measuring the short duration shock state in this material at impact are discussed.
- Publication:
-
Shock Compression of Condensed Matter
- Pub Date:
- July 2002
- DOI:
- 10.1063/1.1483788
- Bibcode:
- 2002AIPC..620.1347T
- Keywords:
-
- Aluminum;
- Dynamic Characteristics;
- Equations Of State;
- Flying Personnel;
- High Pressure;
- High Speed;
- Interferometry;
- Laser Interferometry;
- Shock Waves;
- Silicon;
- 64.30.+t;
- 62.50.+p;
- 81.05.Bx;
- 07.35.+k;
- Solid-State Physics;
- Equations of state of specific substances;
- High-pressure and shock wave effects in solids and liquids;
- Metals semimetals and alloys;
- High-pressure apparatus;
- shock tubes;
- diamond anvil cells