Abstract
Here we discuss the results of the experiments performed using the Prague Asterix Laser System (PALS) of wavelength 0.44 μm (3ω of Iodine laser) and energy ≈ 250 J in 450 ps (FWHM). Two sets of experiments were carried out, firstly, generation of high quality shocks which were steady in time and uniform in space using Phase Zone Plates (PZP), to establish the scaling laws of shock pressure Vs. laser intensity for aluminum foil target of thickness 8 μm. Our results show a good agreement with the delocalized laser absorption model. Secondly, measurements of the Equation of State of carbon compressed by shocks at megabars of pressure have been realized. Equation of State were obtained for carbon using the impedance mismatch technique. Step targets allowed the simultaneous measurements of shock velocity in two different materials. Aluminum was used as a reference material and relative EOS data for carbon have been obtained up to ≈ 14 Mbar pressure.
| Original language | English |
|---|---|
| Pages (from-to) | 266-274 |
| Number of pages | 9 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 5399 |
| DOIs | |
| Publication status | Published - 1 Jun 2004 |
| Externally published | Yes |
| Event | Laser-Assisted Micro- and Nanotechnologies 2003 - St. Petersburg, Russian Federation Duration: 29 Jun 2003 → 3 Jul 2003 |
Keywords
- Equation of state of carbon
- Impedance mismatch technique
- Rear target luminosity
- Shock pressure scaling
- Streak images
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