Laser-driven flat plate impacts to 100 GPA with sub-nanosecond pulse duration and resolution for material property studies
Abstract
Miniature laser-driven flat plates (less than 1-mm diameter x 0.5-10 micron thick, typical) of aluminum, copper, tungsten, and other materials are accelerated to less than 5 km/s. These miniature plates are used to generate one-dimensional shock waves in solids, liquids, and crystals. Dynamic measurements of spall strength at strain rates less than 10(exp 7)/s, elastic-plastic shock wave profiles in 10 micron-thick targets, shocked free-surface acceleration of 10(exp 12) m/s(exp 2), and laser-driven plate launch accelerations of 10(exp 10) m/s(exp 2) are routinely obtained. The small size of the sample of and projectile mass permits recovery of targets without additional unintended damage or energy deposited into the test specimen. These miniature plates can be launched with conventional 1-J laboratory lasers.
- Publication:
-
Presented at the 1991 American Physical Society Conference on Shock Compression of Condensed Matter
- Pub Date:
- 1991
- Bibcode:
- 1991sccm.conf...17P
- Keywords:
-
- Aluminum;
- Copper;
- Flat Plates;
- Impact Damage;
- Mechanical Properties;
- Pulse Duration;
- Pulsed Lasers;
- Shock Waves;
- Tungsten;
- Impact Tests;
- Projectiles;
- Shock Wave Profiles;
- Strain Rate;
- Targets;
- Lasers and Masers