OBJECT KINETIC MONTE CARLO SIMULATIONS OF RADIATION DAMAGE IN BULK TUNGSTEN
We used our recently developed lattice based OKMC code; KSOME  to carryout simulations of radiation damage in bulk W. We study the effect of dimensionality of self interstitial atom (SIA) diffusion i.e. 1D versus 3D on the defect accumulation during irradiation with a primary knock-on atom (PKA) energy of 100 keV at 300 K for the dose rates of 10-5 and 10-6 dpa/s. As expected 3D SIA diffusion significantly reduces damage accumulation due to increased probability of recombination events. In addition, dose rate, over the limited range examined here, appears to have no effect in both cases of SIA diffusion.
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- Related Information: Fusion Semiannual Progress Report for Period Ending June 30, 2015, 58; DOE/ER-0313/58:262-265
- Oak Ridge National Lab, Oak Ridge, TN, United States(US).
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- Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
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- United States