Speaker
Prof.
Masakatsu Murakami
(Institute of Laser Engineering, Osaka University)
Description
To achieve substantially high compression performance of the impact ignition, a novel compression scheme is proposed, in which hollow targets with specifically curved structures initially filled with uniform matter, are driven by converging shock waves. (i) Its self-similar dynamics is analyzed in detail. (ii) The dynamic behavior is demonstrated using two-dimensional hydrodynamic simulations. (iii) A rigorous linear perturbation analysis is proposed, which gives a new dispersion relation with cut-off mode numbers as a function of the specific heat ratio, above which eigenmode perturbations are smeared out in the converging phase. This study provides (1) a new scheme achieving super-high compression via strong shock with the special geometries as another path to achieve high pressures via orthodox adiabatic compression, and (2) a rigorous perturbation analysis to give the new growth rates that are significantly different from the widely accepted prediction. These new knowledge is expected to be applied to “Impact Ignition” – an advanced scheme of ICF, in terms of the reshaped cone casing that works as igniter.
| Country or International Organisation | Japan |
|---|---|
| Paper Number | IFE/P6-7 |
Primary author
Prof.
Masakatsu Murakami
(Institute of Laser Engineering, Osaka University)
Co-author
Dr
Javier Sanz
(ETSI Aeronauticos, Universidad Politecnica de Madrid)
