Tungsten Fusion Collision Cascade & Defect Simulator BCC W [100] MD

Breakthrough Physics Grounding: Classical Norgett-Robinson-Torrens (NRT) models predict sublinear defect survival due to in-cascade spontaneous recombination during thermal spike cooling. However, multi-hundred-keV 1-billion-atom molecular dynamics (MD) reveals that dense overlapping subcascades generate thermal spike shockwaves that push interstitials into massive surviving prismatic dislocation loops ($>50$ interstitials), shifting damage accumulation into a superlinear regime.