Deuterium uptake in magnetic-fusion devices with lithium-conditioned carbon walls

P. S. Krstic, J. P. Allain, C. N. Taylor, J. Dadras, S. Maeda, K. Morokuma, J. Jakowski, A. Allouche, C. H. Skinner

Research output: Research - peer-reviewArticle

Abstract

Lithium wall conditioning has lowered hydrogenic recycling and dramatically improved plasma performance in many magnetic-fusion devices. In this Letter, we report quantum-classical atomistic simulations and laboratory experiments that elucidate the roles of lithium and oxygen in the uptake of hydrogen in amorphous carbon. Surprisingly, we show that lithium creates a high oxygen concentration on a carbon surface when bombarded by deuterium. Furthermore, surface oxygen, rather than lithium, plays the key role in trapping hydrogen.

LanguageEnglish (US)
Article number105001
JournalPhysical Review Letters
Volume110
Issue number10
DOIs
StatePublished - Mar 4 2013
Externally publishedYes

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deuterium
lithium
fusion
carbon
oxygen
hydrogen
conditioning
recycling
trapping
simulation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Krstic, P. S., Allain, J. P., Taylor, C. N., Dadras, J., Maeda, S., Morokuma, K., ... Skinner, C. H. (2013). Deuterium uptake in magnetic-fusion devices with lithium-conditioned carbon walls. Physical Review Letters, 110(10), [105001]. DOI: 10.1103/PhysRevLett.110.105001

Deuterium uptake in magnetic-fusion devices with lithium-conditioned carbon walls. / Krstic, P. S.; Allain, J. P.; Taylor, C. N.; Dadras, J.; Maeda, S.; Morokuma, K.; Jakowski, J.; Allouche, A.; Skinner, C. H.

In: Physical Review Letters, Vol. 110, No. 10, 105001, 04.03.2013.

Research output: Research - peer-reviewArticle

Krstic, PS, Allain, JP, Taylor, CN, Dadras, J, Maeda, S, Morokuma, K, Jakowski, J, Allouche, A & Skinner, CH 2013, 'Deuterium uptake in magnetic-fusion devices with lithium-conditioned carbon walls' Physical Review Letters, vol 110, no. 10, 105001. DOI: 10.1103/PhysRevLett.110.105001
Krstic PS, Allain JP, Taylor CN, Dadras J, Maeda S, Morokuma K et al. Deuterium uptake in magnetic-fusion devices with lithium-conditioned carbon walls. Physical Review Letters. 2013 Mar 4;110(10). 105001. Available from, DOI: 10.1103/PhysRevLett.110.105001
Krstic, P. S. ; Allain, J. P. ; Taylor, C. N. ; Dadras, J. ; Maeda, S. ; Morokuma, K. ; Jakowski, J. ; Allouche, A. ; Skinner, C. H./ Deuterium uptake in magnetic-fusion devices with lithium-conditioned carbon walls. In: Physical Review Letters. 2013 ; Vol. 110, No. 10.
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