Interpretation of experiments measuring the back face of thin aluminum strips by comparison with numerical simulations
Abstract
Experiments using X-UV imagery which show the importance of radiative transfer during ablation of Z weak material, such as aluminum, by a high power ultraviolet laser are described. Measurements are compared with two mumerical simulation programs (MULTI and FILM). Shock propagation shows a correct dependence in relation to the thickness of the film. The back face temperatures are perfectly reproduced by the MULTI simulations, including the radiative transfer. The agreement between experiment and MULTI shows the importance of radiation transfer in this type of interaction. The temperature of the back face is determined more by radiative heating than by shock wave heating, in particular for the thinnest films (5 micrometers).
- Publication:
-
The 1989 Scientific Report of the Laboratory for the Use of High Power Lasers
- Pub Date:
- April 1990
- Bibcode:
- 1990uhel.rept...50B
- Keywords:
-
- Aluminum;
- Laser Ablation;
- Laser Plasma Interactions;
- Radiative Transfer;
- Shock Wave Propagation;
- Ultraviolet Lasers;
- Computerized Simulation;
- Temperature Measurement;
- Thin Films;
- Ultraviolet Spectroscopy;
- X Ray Spectroscopy;
- Lasers and Masers