Effective Atomic Displacements in α-Zirconium under Neutron Irradiation
A computer simulation of atomic displacements cascades in α-zirconium is performed by molecular dynamics method. The dependence of the fraction of surviving defects on the PKA energy (in the range from 0.1 to 20 keV) is revealed for the initial temperature of the material of 0 and 600 K. Group neutron cross sections of the effective displacement under neutron irradiation are prepared. The effective dpa rates for zirconium in neutron spectra of different reactors are evaluated. These values are about four times lower than the corresponding values of conventional dpa rates for neutron energies from 0.5 MeV and higher.
Khanittha Wongseedakaew and Qi Luo
V. Svetukhin and M. Tikhonchev, "Effective Atomic Displacements in α-Zirconium under Neutron Irradiation", Advanced Materials Research, Vol. 1042, pp. 52-57, 2014