Narayanan, V.

2024, Katarzyna Liliana Batani, Sophia Malko, Michael Touati, Jean-Luc Feugeas, Amit D. Lad, Kamalesh Jana, G. Ravindra Kumar, Didier Raffestin, Olena Turianska, Dimitri Khaghani, Alessandro Tentori, Donaldi Mancelli, Artem S. Martynenko, Sergey Pikuz, Roberto Benocci, Luca Volpe, Ghassan Zeraouli, Jose Antonio Perez Hernandez, Enrique Garcia, Joao Santos, Dimitri Batani, Narayanan, V.

Blast waves have been produced in solid target by irradiation with short-pulse high-intensity lasers. The mechanism of production relies on energy deposition from the hot electrons produced by laser-matter interaction, producing a steep temperature gradient inside the target. Hot electrons also produce preheating of the material ahead of the blast wave and expansion of the target rear side, which results in a complex blast wave propagation dynamic. Several diagnostics have been used to characterize the hot electron source, the induced preheating and the velocity of the blast wave. Results are compared to numerical simulations. These show how blast wave pressure is initially very large (more than 100 Mbar), but it decreases very rapidly during propagation.