Tungsten Cascade Simulator: Fusion Radiation Damage Regimes

W Lattice Vacancy (V) Self-Interstitial (SIA) PKA Shockwave Click/Drag lattice to steer recoil vector

Cascade Telemetry (t = 0.0 ps)

Recoil Energy (E_PKA)

20.0 keV

Regime Scaling

Sublinear (Split)

Frenkel Pairs (N_FP)

Surviving Fraction (ξ)

28.0%

PKA Energy (10 - 800 keV)20 keV

Lattice Temp (300K - 1200K)873 K

Divertor Armor Degradation (12.5 dpa)

NRT Displacements (NRT-dpa) 84.2

arc-dpa Survival (MD True) 23.6

Thermal Conductivity Loss -38.4%

DBTT Embrittlement Shift +142 K

Void Swelling Ratio (ΔV/V) 0.48%

1-Billion-Atom MD Insight: Sublinear splitting (10-50 keV) transitions to superlinear thermal-spike overlap (100-500 keV) before linear saturation.