About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Transmutation Effects in Fusion Reactor Materials: Critical Challenges & Path Forward
|
Presentation Title |
Molecular Dynamics Simulations of Mixed Materials Effects in Tungsten |
Author(s) |
Mary Alice Cusentino, Megan McCarthy, Ember Sikorski, Mitchell Wood, Aidan Thompson |
On-Site Speaker (Planned) |
Mary Alice Cusentino |
Abstract Scope |
Tungsten is the candidate material for the divertor component of fusion reactors. However, the divertor surface will be impacted by a high flux of a variety of plasma species including hydrogen, helium, beryllium, and nitrogen. These plasma species can alter the tungsten microstructure, creating bubbles, blisters, and fuzz as well as mixed materials layers. Molecular dynamics simulations can provide insight into the physical mechanisms behind material degradation and synergistic effects between multiple plasma species in the tungsten divertor. However, developing interatomic potentials for these types of complex interactions is difficult. In this work we will discuss the development of machine learning interatomic potentials to describe these complex material interactions as well as molecular dynamics simulations of mixed materials effects at the divertor surface. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Nuclear Materials, |