Post exposure time dependence of deuterium retention in lithium and lithium compounds

Yang, Y.; Buzi, L.; Nelson, A. O.; Kaita, R.; Koel, B. E.

doi:10.1016/j.nme.2019.01.031

Title: Post exposure time dependence of deuterium retention in lithium and lithium compounds

Journal Article · Wed May 01 00:00:00 EDT 2019 · Nuclear Materials and Energy

DOI:https://doi.org/10.1016/j.nme.2019.01.031· OSTI ID:1529729

Yang, Y.; Buzi, L.; Nelson, A. O.; Kaita, R.;

Lithium (Li) coating of plasma-facing components (PFC) has led to improved plasma performance in fusion experiments due to the effectiveness of Li in retaining hydrogen (H) isotopes and thus reducing recycling. Since Li readily reacts with background gases present in fusion experiments, it is important to understand and parameterize the time dependence of deuterium (D) retention in Li and Li compounds for applications of Li under future long-pulse plasma conditions. D retention in pure Li and composite Li-O and Li-C-O films was studied as a function of time after these films were exposed to 450 eV D2+ ion irradiation. The amount of deuterium retained in both Li and Li-O films at 300 K decreased at the same rate by 45% after 16 hours. The amount of D retained in Li-C-O films was found to be independent of time up to 3 days. Increasing the temperature of a pure Li film to 420 K increased this rate of decrease by 50%, while increasing the thickness of the lithium film from 3 to 16 monolayers had no effect on the decrease rate.

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Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States); Princeton Univ., NJ (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES)

Grant/Contract Number:: SC0012890

OSTI ID:: 1529729

Alternate ID(s):: OSTI ID: 1503682; OSTI ID: 1571884

Report Number(s):: DOE-PU-0012890-6; S2352179118302163; PII: S2352179118302163

Journal Information:: Nuclear Materials and Energy, Journal Name: Nuclear Materials and Energy Vol. 19 Journal Issue: C; ISSN 2352-1791

Publisher:: ElsevierCopyright Statement

Country of Publication:: Netherlands

Language:: English

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Cited by: 1 work

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Related Subjects

36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Deuterium retention
Lithium
Lithium compounds
Time dependence

Title: Post exposure time dependence of deuterium retention in lithium and lithium compounds

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