TY - JOUR A2 - Dorland, William AU - Troev, T. AU - Nankov, N. AU - Petrov, L. AU - Popov, E. PY - 2008 DA - 2008/02/07 TI - Computer Modeling of Displacement Cascades in Beryllium Irradiated with Intensive Neutron Flux SP - 746892 VL - 2008 AB - Computer simulations of the radiation defects created in beryllium irradiated by fast neutrons (E>0.1 MeV) usingthe Geant4 and SRIM packages were carried out. The atom cascade displacements in Be at a neutron fluenceof 1.6×1020 n/cm2 were determined to be 0.06 dpa and the helium concentration was calculated to be 168 appm. Theconcentration of L6i has been estimated to be 5% in comparison to the He concentration. Nanoscale calculationswere done in 30×30×30 nm cube of fast neutron-irradiated Be. A correlation between the Be primary knock-on atom(PKA) energies and the damage cascades has been established. The final defect distributions of single vacancies,divacancies, and small vacancy clusters were examined. Our results indicate that the damages caused by He atomsare about 3 times less than damages caused by Be primary knock-on atoms (PKAs). SN - 2090-2220 UR - https://doi.org/10.1155/2008/746892 DO - 10.1155/2008/746892 JF - Research Letters in Physics PB - Hindawi Publishing Corporation KW - ER -