Oxidation of lithium plasma facing components and its effect on plasma performance in the lithium tokamak experiment-β

A. Maan; D. P. Boyle; R. Kaita; E. T. Ostrowski; D. C. Donovan; R. P. Majeski; B. E. Koel; T. M. Biewer; P. E. Hughes; C. Hansen; S. Kubota; V. Soukhanovskii

doi:10.1088/1361-6587/abcd0f

Oxidation of lithium plasma facing components and its effect on plasma performance in the lithium tokamak experiment-β

A. Maan, D. P. Boyle, R. Kaita, E. T. Ostrowski, D. C. Donovan, R. P. Majeski, B. E. Koel, T. M. Biewer, P. E. Hughes, C. Hansen, S. Kubota, V. Soukhanovskii

Diagnostics and Control

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The characteristics of lithium-coated plasma-facing components (PFCs) have been correlated with plasma performance on the lithium tokamak experiment-β (LTX-β). Previous experiments on LTX showed that the application of lithium to PFCs was needed to achieve higher performance discharges with flat electron temperature profiles and high edge temperatures. Samples that match the LTX-β PFCs were exposed to plasmas before and after PFCs were coated with lithium and transferred under vacuum to a surface analysis station. Measurements using x-ray photoelectron spectroscopy (XPS) revealed that the primary surface constituent was lithium oxide. Earlier XPS analysis of lithium-coated PFCs on LTX was only able to show the presence of surface oxygen. The new XPS data from LTX-β have sufficient resolution to clearly identify lithium compounds for the first time, and enable them to be correlated with how lithium-coated PFCs can reduce impurities and retain hydrogen to reduce recycling.

Original language	English
Article number	025007
Journal	Plasma Physics and Controlled Fusion
Volume	63
Issue number	2
DOIs	https://doi.org/10.1088/1361-6587/abcd0f
State	Published - Dec 16 2021

Bibliographical note

Publisher Copyright:
© 2020 IOP Publishing Ltd Printed in the UK

Keywords

Lithium
Plasma confinement
Plasma diagnostics
Plasma surface interactions
Tokamaks

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1088/1361-6587/abcd0f

Cite this

Maan, A., Boyle, D. P., Kaita, R., Ostrowski, E. T., Donovan, D. C., Majeski, R. P., Koel, B. E., Biewer, T. M., Hughes, P. E., Hansen, C., Kubota, S., & Soukhanovskii, V. (2021). Oxidation of lithium plasma facing components and its effect on plasma performance in the lithium tokamak experiment-β. Plasma Physics and Controlled Fusion, 63(2), Article 025007. https://doi.org/10.1088/1361-6587/abcd0f

@article{88eb5d06739c40e294e38b4bcb221920,

title = "Oxidation of lithium plasma facing components and its effect on plasma performance in the lithium tokamak experiment-β",

abstract = "The characteristics of lithium-coated plasma-facing components (PFCs) have been correlated with plasma performance on the lithium tokamak experiment-β (LTX-β). Previous experiments on LTX showed that the application of lithium to PFCs was needed to achieve higher performance discharges with flat electron temperature profiles and high edge temperatures. Samples that match the LTX-β PFCs were exposed to plasmas before and after PFCs were coated with lithium and transferred under vacuum to a surface analysis station. Measurements using x-ray photoelectron spectroscopy (XPS) revealed that the primary surface constituent was lithium oxide. Earlier XPS analysis of lithium-coated PFCs on LTX was only able to show the presence of surface oxygen. The new XPS data from LTX-β have sufficient resolution to clearly identify lithium compounds for the first time, and enable them to be correlated with how lithium-coated PFCs can reduce impurities and retain hydrogen to reduce recycling.",

keywords = "Lithium, Plasma confinement, Plasma diagnostics, Plasma surface interactions, Tokamaks",

author = "A. Maan and Boyle, {D. P.} and R. Kaita and Ostrowski, {E. T.} and Donovan, {D. C.} and Majeski, {R. P.} and Koel, {B. E.} and Biewer, {T. M.} and Hughes, {P. E.} and C. Hansen and S. Kubota and V. Soukhanovskii",

note = "Publisher Copyright: {\textcopyright} 2020 IOP Publishing Ltd Printed in the UK",

year = "2021",

month = dec,

day = "16",

doi = "10.1088/1361-6587/abcd0f",

language = "English",

volume = "63",

journal = "Plasma Physics and Controlled Fusion",

issn = "0741-3335",

publisher = "IOP Publishing",

number = "2",

}

Maan, A, Boyle, DP, Kaita, R, Ostrowski, ET, Donovan, DC, Majeski, RP, Koel, BE, Biewer, TM, Hughes, PE, Hansen, C, Kubota, S & Soukhanovskii, V 2021, 'Oxidation of lithium plasma facing components and its effect on plasma performance in the lithium tokamak experiment-β', Plasma Physics and Controlled Fusion, vol. 63, no. 2, 025007. https://doi.org/10.1088/1361-6587/abcd0f

TY - JOUR

T1 - Oxidation of lithium plasma facing components and its effect on plasma performance in the lithium tokamak experiment-β

AU - Maan, A.

AU - Boyle, D. P.

AU - Kaita, R.

AU - Ostrowski, E. T.

AU - Donovan, D. C.

AU - Majeski, R. P.

AU - Koel, B. E.

AU - Biewer, T. M.

AU - Hughes, P. E.

AU - Hansen, C.

AU - Kubota, S.

AU - Soukhanovskii, V.

PY - 2021/12/16

Y1 - 2021/12/16

N2 - The characteristics of lithium-coated plasma-facing components (PFCs) have been correlated with plasma performance on the lithium tokamak experiment-β (LTX-β). Previous experiments on LTX showed that the application of lithium to PFCs was needed to achieve higher performance discharges with flat electron temperature profiles and high edge temperatures. Samples that match the LTX-β PFCs were exposed to plasmas before and after PFCs were coated with lithium and transferred under vacuum to a surface analysis station. Measurements using x-ray photoelectron spectroscopy (XPS) revealed that the primary surface constituent was lithium oxide. Earlier XPS analysis of lithium-coated PFCs on LTX was only able to show the presence of surface oxygen. The new XPS data from LTX-β have sufficient resolution to clearly identify lithium compounds for the first time, and enable them to be correlated with how lithium-coated PFCs can reduce impurities and retain hydrogen to reduce recycling.

AB - The characteristics of lithium-coated plasma-facing components (PFCs) have been correlated with plasma performance on the lithium tokamak experiment-β (LTX-β). Previous experiments on LTX showed that the application of lithium to PFCs was needed to achieve higher performance discharges with flat electron temperature profiles and high edge temperatures. Samples that match the LTX-β PFCs were exposed to plasmas before and after PFCs were coated with lithium and transferred under vacuum to a surface analysis station. Measurements using x-ray photoelectron spectroscopy (XPS) revealed that the primary surface constituent was lithium oxide. Earlier XPS analysis of lithium-coated PFCs on LTX was only able to show the presence of surface oxygen. The new XPS data from LTX-β have sufficient resolution to clearly identify lithium compounds for the first time, and enable them to be correlated with how lithium-coated PFCs can reduce impurities and retain hydrogen to reduce recycling.

KW - Lithium

KW - Plasma confinement

KW - Plasma diagnostics

KW - Plasma surface interactions

KW - Tokamaks

UR - http://www.scopus.com/inward/record.url?scp=85098661644&partnerID=8YFLogxK

U2 - 10.1088/1361-6587/abcd0f

DO - 10.1088/1361-6587/abcd0f

M3 - Article

AN - SCOPUS:85098661644

SN - 0741-3335

VL - 63

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 2

M1 - 025007

ER -

Oxidation of lithium plasma facing components and its effect on plasma performance in the lithium tokamak experiment-β

Abstract

Bibliographical note

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this