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X-ray imaging and radiation transport effects on cylindrical implosions
G Pérez-Callejo1, M Bailly-Grandvaux2, R Florido3
1Departamento de Física Teórica Atómica y Óptica, Universidad de Valladolid, 47011 Valladolid, Spain.
Magnetizing inertial confinement implosions with a 30-tesla magnetic field improves performance by reducing energy loss. Accurate simulation requires including radiation transport in magnetohydrodynamic models for cylindrical implosions.
Area of Science:
- Plasma Physics
- Fusion Energy Research
- Magnetohydrodynamics
Background:
- Magnetization of inertial confinement fusion (ICF) offers improved performance by mitigating energy losses and hydrodynamic instabilities.
- Cylindrical implosions, due to their axial symmetry, are ideal for studying magnetic field effects.
Purpose of the Study:
- To experimentally investigate the impact of an initial seed magnetic field on cylindrical inertial confinement implosions.
- To compare experimental results with magnetohydrodynamic (MHD) simulations.
Main Methods:
- Experiments were conducted on the OMEGA-60 laser facility using a 40-beam, 14.5 kJ, 1.5 ns drive.
- An initial seed magnetic field of 30 tesla was applied along the target axes.
- Implosions were diagnosed using time-resolved X-ray imaging from two orthogonal lines of sight.
Main Results:
- Experimental data showed good agreement with MHD simulations when radiation transport was explicitly included.
- The study highlights the critical role of radiation transport in accurately interpreting experimental data.
Conclusions:
- Magnetized cylindrical implosions on OMEGA-60 demonstrate the potential benefits of magnetic fields in ICF.
- Accurate modeling of magnetized ICF experiments necessitates the incorporation of radiation transport effects.
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