Plasma Science by unknow

Author:unknow
Language: eng
Format: epub
Tags: Math, Chemistry, and Physics: Physics, Space and Aeronautics: Policy, Reviews and Evaluations
Publisher: National Academies Press
Published: 2021-04-07T00:00:00+00:00

FIGURE 4.16 The PETAL, LMJ, and Jets. The Laser MegaJoule (LMJ) in France has been operational since 2014, beginning with 8 of its eventual 176 beams, and performing experiments with 40 beams (150 kJ) since 2017. The petawatt laser PETAL was added to the LMJ facility in 2017. Currently about 20 to 30 percent of the operating time is accessible to academic researchers. The images shown are from one of the first of a series of hydrodynamic instability experiments, showing the evolution of a hydrodynamic jet. Initially the jet is a small surface perturbation on the target shown at left. When a shock launched by an X-ray drive incident from the bottom crosses the interface between high density (red) and low density (gray) material, the perturbation introduced by the surface shape forms a rapidly growing jet, as seen in the X-ray radiographs. Simulations accurately capture the size of the jet as a function of time, as seen in the plot on the right. SOURCE: J.-L. Miquel and E. Prene, 2019, LMJ & PETAL status and program overview, Nuclear Fusion 59:032005.

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