Optimization of Phase Transfer Catalysis for In Situ Coating of Resorcinol Formaldehyde Targets

To produce foam capsule fusion energy targets with smoother surfaces, we have combined two previously reported resorcinol formaldehyde (RF) aerogel synthesis techniques. Using this new hybrid process, we have successfully produced aerogel spheres that are coated in situ with a smooth submicron-thick skin. The surface roughness of these spheres is compared to the conventionally synthesized RF capsules. We also illustrate the microscopic surface morphology of the new and traditional techniques. We propose that this new approach to capsule synthesis be investigated further as a target candidate; both the enhanced smoothness and the altered surface morphology make for a more desirable coating substrate.