Generation of shock waves by hot electron explosions driven by a CO2 laser
- 15 February 1981
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 38 (4) , 226-228
- https://doi.org/10.1063/1.92324
Abstract
We observe shock waves with velocity 2.5×106 cm/sec generated by the interaction of a nanosecond CO2 laser at an intensity of 3×1014 W/cm2 with 12–40‐μm‐thick aluminum foils. It is proposed that these shock waves are not generated by thermal ablation but rather by hot electron heating and explosion of a layer of Al several microns thick adjacent to the target surface. Shock pressures produced by this process are comparable to the highest pressures yet observed by conventional laser driven thermal ablation.Keywords
This publication has 11 references indexed in Scilit:
- Physics at very high pressures with laser-driven shock wavesNature, 1980
- Anomalous Energy Transport to Rear Surface of Microdisks at High Laser IrradiancesPhysical Review Letters, 1979
- Impedance-match experiments using laser-driven shock wavesApplied Physics Letters, 1979
- Burn-through of thin aluminum foils by laser-driven ablationJournal of Applied Physics, 1979
- Energy absorption in plasmas produced by intense 10-μm laser radiationJournal of Applied Physics, 1979
- Superthermal x-ray emission from CO2-laser-produced plasmasJournal of Applied Physics, 1979
- Ultrahigh-Pressure Laser-Driven Shock-Wave Experiments in AluminumPhysical Review Letters, 1979
- Studies of Laser-Driven Shock Waves in AluminumPhysical Review Letters, 1978
- Theory of Hot-Electron Spectra at High Laser IntensityPhysical Review Letters, 1977
- Observation of Laser-Driven Shock Waves in Solid HydrogenPhysical Review Letters, 1974