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Numerical method for finding uniform irradiation conditions of a fusion capsule driven by X-ray radiation

  • M. Nakamura (a1), K. Kondo (a1), H. Nishimura (a1), T. Endo (a1), H. Shiraga (a1), S. Miyamoto (a1), Y. Kato (a1) and S. Nakai (a1)...

Abstract

A three-dimensional model to calculate X-ray intensity distribution on an indirectly driven fusion target is presented. The model includes conversion of laser light into X rays, radiation reemission from X-ray-heated wall of a cavity, and influence of an inner pellet (i.e., a fuel capsule) on radiation redistribution. Intensity distribution of an X ray inside a cylindrical cavity heated by intense blue laser light (wavelength 351 nm, energy 5.2 kJ, duration 0.7 ns) was determined by measuring a burn-through signal from a diagnostic foil integrated onto the cavity. The experimental result is well replicated by the model calculation. By using this model, optimum conditions for uniform irradiation of afusion capsule by X-ray radiation are evaluated for use in Gekko XII laser fusion experiments.

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Numerical method for finding uniform irradiation conditions of a fusion capsule driven by X-ray radiation

  • M. Nakamura (a1), K. Kondo (a1), H. Nishimura (a1), T. Endo (a1), H. Shiraga (a1), S. Miyamoto (a1), Y. Kato (a1) and S. Nakai (a1)...

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