Interaction of laser radiation with matter. Laser plasma
Investigation of compression of indirect-drive targets under conditions of the NIF facility using one-dimensional modelling
V. B. Rozanov, G. A. Vergunova
P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow
The indirect compression dynamics of targets containing capsules with ablators of a plastic, high-density carbon and beryllium is simulated in the framework of a one-dimensional model based on the 1D RADIAN code. Experiments with such targets are performed on the NIF facility in the Livermore Laboratory (USA) in 2014–2018. The 1D simulation data are consistent with the results of experiments and calculations made at this Laboratory. The effect of the hard part of hohlraum radiation on capsule compression parameters is confirmed. We demonstrate the feasibility of eliminating this influence not only by selecting the hohlraum material but also by introducing admixtures into the capsule that absorb this radiation. It is shown how varying the amount of admixture in the capsule ablator varies the spectrum of the radiation that heats the DT fuel.
indirect irradiation, spherical compression, laser plasma, numerical simulation.
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Quantum Electronics, 2020, 50:2, 162–168
V. B. Rozanov, G. A. Vergunova, “Investigation of compression of indirect-drive targets under conditions of the NIF facility using one-dimensional modelling”, Kvantovaya Elektronika, 50:2 (2020), 162–168 [Quantum Electron., 50:2 (2020), 162–168]
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