Development of a LIBS system for in situ surface measurements during plasma exposure in PISCES-A

Nishijima, D.; Patino, M.; Doerner, R. P.

doi:10.1063/1.5034349

Title: Development of a LIBS system for in situ surface measurements during plasma exposure in PISCES-A

Journal Article · 01 July 2018 · Review of Scientific Instruments

DOI: https://doi.org/10.1063/1.5034349 · OSTI ID:1609934

Nishijima, D. ^[1]; Patino, M. ^[1]; Doerner, R. P. ^[1]

Univ. of California, San Diego, CA (United States)

A laser-induced breakdown spectroscopy (LIBS) system has been developed with a Q-switched Nd:YAG laser (wavelength = 1064 nm and pulse width ~5 ns) to conduct in situ surface measurements during plasma exposure in the PISCES-A linear divertor plasma simulator. The LIBS signal enhancement is obtained with both the magnetic field normal to the surface of a target and steady-state background plasma. Migration of sputtered Ta impurities onto the neighboring Cr surface is identified during He plasma exposure, only when cone structures are formed on the Cr surface. D retention in W during D plasma exposure is observed to decrease with increasing the sample temperature. The temporal evolution of D outgassing from W is measured in a time range of ~10-420 s right after D plasma exposure. A power law fit, t^-α, yields α ~ 0.34 ± 0.09, which is nearly consistent with calculated and measured values.

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Research Organization:: Univ. of California, San Diego, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: FG02-07ER54912; SC0018268PP

OSTI ID:: 1609934

Alternate ID(s):: OSTI ID: 1460025

Journal Information:: Review of Scientific Instruments, Vol. 89, Issue 10; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 14 works

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References (19)

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Time-resolved laser-induced desorption spectroscopy (LIDS) for quantified in-situ hydrogen isotope retention measurement and removal from plasma facing materials Yu, J. H.; Baldwin, M. J.; Simmonds, M. J. Review of Scientific Instruments, Vol. 90, Issue 7 https://doi.org/10.1063/1.5100162	journal	July 2019
Plasma-Material-Interaction Research Using PISCES Linear Plasma Devices Baldwin, M. J.; Doerner, R. P.; Nishijima, D. Fusion Science and Technology, Vol. 75, Issue 7 https://doi.org/10.1080/15361055.2019.1646608	journal	October 2019
Laser-induced breakdown spectroscopy (LIBS) as a novel technique for detecting bacterial infection in insects Killiny, Nabil; Etxeberria, Ed; Flores, Alejandro Ponce Scientific Reports, Vol. 9, Issue 1 https://doi.org/10.1038/s41598-019-39164-8	journal	February 2019

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Title: Development of a LIBS system for in situ surface measurements during plasma exposure in PISCES-A

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