X-ray diffraction (XRD), small angle x-ray scattering (SAXS), and extended x-ray absorption fine structure (EXAFS) were measured before and after irradiation.A molecular dynamics (MD) simulation (for a bigger system than in our previous work) was performed to simulate radiation damage of an...
DamageIon BeamsMeasuring MethodsMolecular BeamsNickelThis paper summarizes recent progress in the understanding of energetic displacement cascades in metals achieved with the molecular-dynamics (MD) simulation technique. Recoil events with primary-knock-on-atom (PKA) energies up to 5 keV were simulated ...
Dynamics of radiation damage. Phys. Rev.120(4), 1229 (1960). Article ADS CAS Google Scholar Verlet, L. Computer" experiments" on classical fluids. I. Thermodynamical properties of Lennard-Jones molecules. Phys. Rev.159(1), 98 (1967). Article ADS CAS Google Scholar Lennard-Jones, J. ...
The effect of pre-existing lattice defects on radiation defect dynamics in solids remains unexplored. Here, we use a pulsed beam method to measure the time constant of defect relaxation for 500keV Ar ion bombardment of Si at 100掳C with the following two representative types of pre- existing ...
It is reported that alloys with Cr concentration around 9 at% have a minimum influence on the shift of the ductile-to-brittle transition temperature (DBTT) among all the Fe–Cr alloys [6,7]. Many study was also conducted in Fe to investigate the radiation-induced damage evolution in ...
(i.e., higher in 206Pb/204Pb) than the parent source rocks (Basak & Martin, 2013; Crocket et al., 2012; Dausmann et al., 2019; Gutjahr et al., 2009; Kurzweil et al., 2010) due to preferential release of radiogenic Pb from accessory minerals and/or sites of radiation damage (...
[10] Jiahui Liu, Jesper Byggmästar, Zheyong Fan, Ping Qian, and Yanjing Su, Large-scale machine-learning molecular dynamics simulation of primary radiation damage in tungsten, Phys. Rev. B 108, 054312 (2023).[11] Penghua Ying and Zheyong Fan, Combining the D3 dispersion correction with...
For many of these applications, the polymer's stability during and after radiation damage is a serious concern. The effect of electron irradiation on the breaking of inter-molecular bonds and creation of free radicals in Kapton polyimide were studied using reactive molecular dynamics simulation with ...
[10] Jiahui Liu, Jesper Byggmästar, Zheyong Fan, Ping Qian, and Yanjing Su, Large-scale machine-learning molecular dynamics simulation of primary radiation damage in tungsten, Phys. Rev. B 108, 054312 (2023). [11] Penghua Ying and Zheyong Fan, Combining the D3 dispersion correction wit...
radiation damageSidense collision cascadeannealing temperatureWe investigate the annealing of damage produced by a dense collision cascade in the bulk of a silicon target. The evolution of the damage with time (up to 50ps) and its dependence with the annealing temperature (up to 1700 K) are ...