研究目的

Determining deuterium-tritium (DT) fuel and plastic ablator (CH) areal densities (ρR) in high-convergence, cryogenic inertial confinement fusion implosions at the National Ignition Facility.

研究成果

The radiochemical method provides a novel approach to estimating the spatially averaged areal densities of layered ICF capsules. The results indicate larger than expected ρR(CH) values, suggesting substantial mixing of cold fuel and remaining ablator. This method is particularly useful when both fuel and ablator contribute significantly to the total ρR, offering insights into the dynamics of cryogenic implosions at the National Ignition Facility.

研究不足

The capsule model has several free parameters which might introduce systematic errors in the ρR values. The most uncertain parameter is the density ratio ρ3/ρ2 due to the lack of measurements of the density profile of the capsule at stagnation. The sensitivity of ρR to variations in cold fuel temperature and confinement time also introduces potential uncertainties.