Measurements of nonuniformly heated plasmas with a 2D space-resolved high-speed sampling camera

Ryosuke Kodama; K. Okada; H. Setoguchi

doi:10.1117/12.424252

17 April 2001 Measurements of nonuniformly heated plasmas with a 2D space-resolved high-speed sampling camera

Ryosuke Kodama, K. Okada, H. Setoguchi

Proceedings Volume 4183, 24th International Congress on High-Speed Photography and Photonics; (2001) https://doi.org/10.1117/12.424252
Event: 24th International Congress on High-Speed Photography and Photonics, 2000, Sendai, Japan

Abstract

We developed a two-dimensional space resolved high speed UV sampling camera (2D-HISAC) to study energy transport in laser produced plasmas. The HISAC is composed of an optical bundle fiber coupled to a streak camera to get a two dimensional spatial resolution. The temporal resolution of a few 10 ps was obtained with the 2D-HISAC using multi mode fibers. This 2D- HISAC was applied to the experiments to investigate laser- produced plasmas. Nonlocal heating by high-density relativistic electrons in ultra-intense laser interactions was temporally and 2-D spatially resolved. Observed were filament of the relativistic electron heating in solid targets. The 2D- HISAC was also used in the experiment to estimate uniformity of laser-ablation pressures at an oblique incidence of laser light with a large spot area. Two-dimensional shock heating was temporally resolved, resulting in the distribution of the ablation pressure.

Citation Download Citation

Ryosuke Kodama, K. Okada, and H. Setoguchi "Measurements of nonuniformly heated plasmas with a 2D space-resolved high-speed sampling camera", Proc. SPIE 4183, 24th International Congress on High-Speed Photography and Photonics, (17 April 2001); https://doi.org/10.1117/12.424252

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