Atomic displacement parameter

The ion fluence induced swelling was found to be different with different ions depending on irradiation parameters. By converting the ion fluence to displacement per atom (dpa), the critical dpa for swelling was determined to be about 0.04 dpa, corresponds deposited energy of 2eV/atom.

3p vicedric 08-02-2023 2 1   Download

Protein crystal structures are potentially over-interpreted since they are routinely refined without any restraint on the upper limit of atomic B-factors. Consequently, some of their atoms, undetected in the electron density maps, are allowed to reach extremely large B-factors, even above 100 square Angstroms, and their final positions are purely speculative and not based on any experimental evidence.

9p viconnecticut2711 28-10-2020 13 0   Download

The most important ageing effect on the reactor pressure vessel (RPV) is radiation embrittlement, which is mainly caused by fast neutrons during operation lifetime of nuclear reactors. The aim of this study was to investigate the DPA (displacement per atom) rate, an important parameter describing radiation damage to the RPV, and identify the position of the maximum DPA rate in the RPV of the VVER-1000/V320 reactor using the Monte Carlo code MCNP5.

10p vineptune2711 04-11-2019 10 0   Download