In fusion reactor environment, helium bubble acts as a crucial inducement to the
performance degradation of plasma facing tungsten, leading to irradiation hardening and …

Tungsten plays a significant role in the nuclear industry, in which defects are generated
upon exposure to irradiation. Irradiation-induced defects, such as dislocation loops and …

Irradiation hardening caused by helium (He) ion bombardment is directly related to the
pinning effect of He-related defects on dislocation glide in metals. Taking tungsten as an …

Evolution of vacancy-type defects has been investigated in undamaged and copper ion pre-
damaged tungsten exposed to low-energy and high-flux helium plasma (60 eV, 1× 10 22 …

It is well-established that mechanical behavior of the materials is significantly affected under
irradiation. This is often due to the growth of nanobubbles that changes the microstructure of …

The characteristic plasticity associated with the deformation of helium bubbles and voids in
aluminium under shock compression is investigated by molecular dynamics (MD) …

We performed atomistic simulations to study the strengthening effect of He bubbles with
different He atom concentrations within single crystal copper matrix. Uniaxial tensile …

Molecular dynamics simulation has been performed to investigate the effects of irradiated
helium atoms in tungsten on the bubble nucleation and the dislocation loop formation …

Nanometric voids are one of the fundamental defects generated by neutron irradiation in
fusion environment, which impede dislocation motion and cause hardening of plasma facing …

In this letter, a comprehensive mechanism for the nucleation and growth of bubbles on
dislocations under plasma exposure of tungsten is proposed. The mechanism reconciles …