Sorption of atmospheric gases by bulk lithium metal

Hart, C. A.; Skinner, C. H.; Capece, A. M.; Koel, B. E.

doi:10.1016/j.jnucmat.2015.11.006

Title: Sorption of atmospheric gases by bulk lithium metal

Journal Article · Fri Jan 01 00:00:00 EST 2016 · Journal of Nuclear Materials

DOI:https://doi.org/10.1016/j.jnucmat.2015.11.006· OSTI ID:1256391

Hart, C. A. ^[1]; Skinner, C. H. ^[2];

^[2];

^[3]

Univ. of Maryland, College Park, MD (United States). Dept. of Physics
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Princeton Univ., Princeton, NJ (United States). Dept. of Chemical and Biological Engineering

Lithium conditioning of plasma facing components has enhanced the performance of several fusion devices. Elemental lithium will react with air during maintenance activities and with residual gases (H2O, CO, CO2) in the vacuum vessel during operation. We have used a mass balance (microgram sensitivity) to measure the mass gain of lithium samples during exposure of a ~ 1 cm2 surface to ambient and dry synthetic air. For ambient air, we found an initial mass gain of several mg/h declining to less than 1 mg/h after an hour and decreasing by an order of magnitude after 24 h. A 9 mg sample achieved a final mass gain corresponding to complete conversion to Li2CO3 Li2CO3 after 5 days. Exposure to dry air resulted in a 30 times lower initial rate of mass gain. Results have implications for the chemical state of lithium plasma facing surfaces and for safe handling of lithium coated components.

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

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

Grant/Contract Number:: AC02-09CH11466; SC0008598; DE AC02-09CH11466; SCOOO859B

OSTI ID:: 1256391

Alternate ID(s):: OSTI ID: 1392272; OSTI ID: 1396691

Report Number(s):: PPPL-5215; PII: S0022311515303147

Journal Information:: Journal of Nuclear Materials, Vol. 468, Issue C; ISSN 0022-3115

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 5 works

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References (9)

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Cited By (1)

Design and measurement methods for a lithium vapor box similarity experiment Schwartz, J. A.; Emdee, E. D.; Jaworski, M. A. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5039406	journal	October 2018

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