Fast ion transport at a gas-metal interface
Abstract
Fast ion transport and the resulting fusion yield reduction are computed at a gas-metal interface. The extent of fusion yield reduction is observed to depend sensitively on the charge state of the surrounding pusher material and the width of the atomically mixed region. These sensitivities suggest that idealized boundary conditions often implemented at the gas-pusher interface for the purpose of estimating fast ion loss will likely overestimate fusion reactivity reduction in several important limits. Additionally, the impact of a spatially complex material interface is investigated by considering a collection of droplets of the pusher material immersed in a DT plasma. It is found that for small Knudsen numbers, the extent of fusion yield reduction scales with the surface area of the material interface. As the Knudsen number is increased, but, the simple surface area scaling is broken, suggesting that hydrodynamic mix has a nontrivial impact on the extent of fast ion losses.
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1417811
- Alternate Identifier(s):
- OSTI ID: 1407435
- Report Number(s):
- LA-UR-17-25628
Journal ID: ISSN 1070-664X
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 24; Journal Issue: 11; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
McDevitt, Christopher J., Tang, Xian-Zhu, and Guo, Zehua. Fast ion transport at a gas-metal interface. United States: N. p., 2017.
Web. doi:10.1063/1.4998462.
McDevitt, Christopher J., Tang, Xian-Zhu, & Guo, Zehua. Fast ion transport at a gas-metal interface. United States. https://doi.org/10.1063/1.4998462
McDevitt, Christopher J., Tang, Xian-Zhu, and Guo, Zehua. Mon .
"Fast ion transport at a gas-metal interface". United States. https://doi.org/10.1063/1.4998462. https://www.osti.gov/servlets/purl/1417811.
@article{osti_1417811,
title = {Fast ion transport at a gas-metal interface},
author = {McDevitt, Christopher J. and Tang, Xian-Zhu and Guo, Zehua},
abstractNote = {Fast ion transport and the resulting fusion yield reduction are computed at a gas-metal interface. The extent of fusion yield reduction is observed to depend sensitively on the charge state of the surrounding pusher material and the width of the atomically mixed region. These sensitivities suggest that idealized boundary conditions often implemented at the gas-pusher interface for the purpose of estimating fast ion loss will likely overestimate fusion reactivity reduction in several important limits. Additionally, the impact of a spatially complex material interface is investigated by considering a collection of droplets of the pusher material immersed in a DT plasma. It is found that for small Knudsen numbers, the extent of fusion yield reduction scales with the surface area of the material interface. As the Knudsen number is increased, but, the simple surface area scaling is broken, suggesting that hydrodynamic mix has a nontrivial impact on the extent of fast ion losses.},
doi = {10.1063/1.4998462},
journal = {Physics of Plasmas},
number = 11,
volume = 24,
place = {United States},
year = {Mon Nov 06 00:00:00 EST 2017},
month = {Mon Nov 06 00:00:00 EST 2017}
}
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Works referencing / citing this record:
Yield reduction via the Knudsen layer effect in a mixture of fuel and pusher material
journal, December 2018
- McDevitt, Christopher J.; Tang, Xian-Zhu; Guo, Zehua
- Plasma Physics and Controlled Fusion, Vol. 61, Issue 2