Zobrazeno 1 - 10
of 462
pro vyhledávání: '"Uberuaga, Blas P"'
Radiation back-fluxes, generated from neutron-material interactions in fusion power reactors, can dramatically impact the plasma dynamics, e.g., by seeding runaway electrons during disruptions via Compton scattering of background electrons by wall-em
Externí odkaz:
http://arxiv.org/abs/2409.16614
Autor:
Talapatra, Anjana Anu, Pandey, Anup, Wilson, Matthew S., Li, Ying Wai, Pilania, Ghanshyam, Uberuaga, Blas Pedro, Perez, Danny
The slow microstructural evolution of materials often plays a key role in determining material properties. When the unit steps of the evolution process are slow, direct simulation approaches such as molecular dynamics become prohibitive and Kinetic M
Externí odkaz:
http://arxiv.org/abs/2409.12284
The accumulation of gas atoms in tungsten is a topic of long-standing interest to the plasma-facing materials community due the metal's use as a divertor material in some tokamak fusion reactors. The nucleation and growth of He/H gas bubbles (along w
Externí odkaz:
http://arxiv.org/abs/2407.06080
Publikováno v:
Scripta Materialia, Volume 252, 2024, 116224
Short-range ordering (SRO) in multi-principal element alloys influences material properties such as strength and corrosion. While some degree of SRO is expected at equilibrium, predicting the kinetics of its formation is challenging. We present a sim
Externí odkaz:
http://arxiv.org/abs/2407.00781
Autor:
Chesser, Ian, Derlet, Peter M., Mishra, Avanish, Paguaga, Sarah, Mathew, Nithin, Dang, Khanh, Uberuaga, Blas Pedro, Hunter, Abigail, Fensin, Saryu
The microstructural evolution at and near pre-existing grain boundaries (GBs) and dislocations in materials under high radiation doses is still poorly understood. In this work, we use the creation relaxation algorithm (CRA) developed for atomistic mo
Externí odkaz:
http://arxiv.org/abs/2405.04633
Autor:
El-Atwani, Osman, Barnett, Annie K., Martinez, Enrique, Han, Jian, Leff, Asher C., Hung, Chang-Yu, Nathaniel, James E., He, Sicong, Mang, Emily H., Woryk, Larissa M., Hattar, Khalid, Uberuaga, Blas P., Srolovitz, David J., Falk, Michael L., Marian, Jaime, Taheri, Mitra L.
Grain boundaries (GBs) in polycrystalline materials are powerful sinks for irradiation defects. While standard theories assume that the sink efficiency of a grain boundary is defined solely by its character before irradiation, recent evidence conclus
Externí odkaz:
http://arxiv.org/abs/2404.10144
This study explores the intricate interactions between grain boundaries (GBs) and irradiation-induced defects in nanocrystalline iron, highlighting the role of dopants like copper. Utilizing molecular dynamics simulations, the research delineates how
Externí odkaz:
http://arxiv.org/abs/2403.12257
Stand-off runaway electron termination by injected tungsten particulates offers a plausible option in the toolbox of disruption mitigation. Tungsten is an attractive material choice for this application due to large electron stopping power and high m
Externí odkaz:
http://arxiv.org/abs/2310.16998
Nuclear materials are often demanded to function for extended time in extreme environments, including high radiation fluxes and transmutation, high temperature and temperature gradients, stresses, and corrosive coolants. They also have a wide range o
Externí odkaz:
http://arxiv.org/abs/2211.09239
Autor:
Taylor, Sandra D., Kohnert, Aaron A., Lambeets, Sten V., Yano, Kayla H., Still, Evan K., Simonnin, Pauline G., Hosemann, Peter, Uberuaga, Blas P., Kaspar, Tiffany C., Schreiber, Daniel K.
Publikováno v:
In Materialia May 2024 34
