Material dynamics measurements in conditions relevant to laser-direct-drive fusion

Kyle R. P. Kafka; Adrien Pineau; Tanya Z. Kosc; Valeri N. Goncharov; Suxing X. Hu; Guillaume Duchateau; Stavros G. Demos

doi:10.1117/12.2647913

17 March 2023 Material dynamics measurements in conditions relevant to laser-direct-drive fusion

Kyle R. P. Kafka, Adrien Pineau, Tanya Z. Kosc, Valeri N. Goncharov, Suxing X. Hu, Guillaume Duchateau, Stavros G. Demos

Author Affiliations +

Proceedings Volume PC12401, High Power Lasers for Fusion Research VII; PC1240108 (2023) https://doi.org/10.1117/12.2647913
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

Current state-of-the art radiation-hydrodynamic codes do not include the physics involved in the laser-induced solid-to-plasma transition. However, this transition process is understood to significantly impact the resulting ablation and shock front geometry, due to “laser imprint” and “shinethrough.” An experimental system involving synchronized femtosecond and picosecond lasers is developed to initiate and characterize dynamics of planar target materials irradiated by conditions similar to a “picket” prepulse from a direct-drive pulse shape. Ultrafast imaging of the resulting plasma formation, plume expansion, and shock-wave propagation is performed with femtosecond-scale resolution for a polystyrene target. These results may be used to improve future direct-drive experimental and modeling efforts.

Conference Presentation

Citation Download Citation

Kyle R. P. Kafka, Adrien Pineau, Tanya Z. Kosc, Valeri N. Goncharov, Suxing X. Hu, Guillaume Duchateau, and Stavros G. Demos "Material dynamics measurements in conditions relevant to laser-direct-drive fusion", Proc. SPIE PC12401, High Power Lasers for Fusion Research VII, PC1240108 (17 March 2023); https://doi.org/10.1117/12.2647913

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