Kinetics of Tritium Release from Thermal Neutron-Irradiated Li_0.17Pb_0.83

Volume and pressure of helium bubbles inside liquid Pb16Li. A molecular dynamics study

“…In [62] the authors claim that although the energy of the Li-H bond in the alloy is much larger than that of the Pb-H bond, the ionic bonding between Li and H is shielded and weaken by the surrounding Pb atoms. Since Li atoms inside liquid Pb16Li are surrounded by 5 Pb atoms on average, the Li activity becomes low.…”

“…H atoms absorbed in liquid Pb16Li are presented as the state of Li + H − ionic bond and isolated from neighbouring Li atoms by surrounding The pressure He nanobubbles (in GPa) versus temperature for three different bubble sizes, (R i = 4a 0 , 8a 0 and 12a 0 ) according to our MD calculations (full symbols), and calculated using the Young-Laplace equation as described above (open symbols). Pb atoms [62]. Therefore, H in liquid Pb16Li is stabilized near a Li atom by this binding interaction of Li-H. After breaking the interaction (at a certain moment), the H atom moves into the cloud of Pb atoms and migrates for a short time; subse quently, it binds to another (or the same) Li atom [62].…”

“…Pb atoms [62]. Therefore, H in liquid Pb16Li is stabilized near a Li atom by this binding interaction of Li-H. After breaking the interaction (at a certain moment), the H atom moves into the cloud of Pb atoms and migrates for a short time; subse quently, it binds to another (or the same) Li atom [62]. The same mechanism, 'quasiinstantaneous jumps plus periods of localized vibrations', has been found in the H diffusion in liquid aluminium [63].…”