| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Radiation Effects in Metals and Ceramics
|
| Presentation Title |
H-65: Tungsten Transmutation Products from Mixed Spectrum Neutron Irradiation |
| Author(s) |
Nathan Clark Reid, Lauren M Garrison, Yutai Katoh, Jean Paul Allain |
| On-Site Speaker (Planned) |
Nathan Clark Reid |
| Abstract Scope |
Tungsten (W) and W-alloys are being considered as armor material for future fusion device plasma facing components (PFCs). Neutrons produced from the fusion reaction will cause transmutation reactions in W-alloys until precipitation of near-neighbors in the periodic table begin to cause embrittlement and degradation of thermal conductivity. The amount of transmutation and thus property changes critically depends on the neutron energy spectrum. Tungsten irradiated in a high transmutation spectrum, the flux trap of the High Flux Isotope Reactor, is compared with tungsten irradiated inside a shield to reduce transmutation. A detailed distribution of elements in neutron-irradiated W is obtained using glow-discharge optical emission spectroscopy (GD-OES). The composition is measured by controlled sputtering of surface layers, while simultaneously ionizing and measuring the optical emission of the eroded material. Depth is determined with in-operando laser interferometry to have quantification of composition with depth. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |