Development of a LIBS system for in situ surface measurements during plasma exposure in PISCES-A
Abstract
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.
- Authors:
-
- Univ. of California, San Diego, CA (United States)
- Publication Date:
- Research Org.:
- Univ. of California, San Diego, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1609934
- Alternate Identifier(s):
- OSTI ID: 1460025
- Grant/Contract Number:
- FG02-07ER54912; SC0018268PP
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Review of Scientific Instruments
- Additional Journal Information:
- Journal Volume: 89; Journal Issue: 10; Journal ID: ISSN 0034-6748
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Instruments & Instrumentation; Physics; Surface and interface chemistry; Plasma confinement; Plasma devices; Chemical elements; Isotopes; Plasma sources; Transition metals; Optical metrology; Laser-induced plasma; Laser induced breakdown spectroscopy
Citation Formats
Nishijima, D., Patino, M., and Doerner, R. P. Development of a LIBS system for in situ surface measurements during plasma exposure in PISCES-A. United States: N. p., 2018.
Web. doi:10.1063/1.5034349.
Nishijima, D., Patino, M., & Doerner, R. P. Development of a LIBS system for in situ surface measurements during plasma exposure in PISCES-A. United States. https://doi.org/10.1063/1.5034349
Nishijima, D., Patino, M., and Doerner, R. P. Sun .
"Development of a LIBS system for in situ surface measurements during plasma exposure in PISCES-A". United States. https://doi.org/10.1063/1.5034349. https://www.osti.gov/servlets/purl/1609934.
@article{osti_1609934,
title = {Development of a LIBS system for in situ surface measurements during plasma exposure in PISCES-A},
author = {Nishijima, D. and Patino, M. and Doerner, R. P.},
abstractNote = {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.},
doi = {10.1063/1.5034349},
journal = {Review of Scientific Instruments},
number = 10,
volume = 89,
place = {United States},
year = {Sun Jul 01 00:00:00 EDT 2018},
month = {Sun Jul 01 00:00:00 EDT 2018}
}
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Works referencing / citing this record:
Time-resolved laser-induced desorption spectroscopy (LIDS) for quantified in-situ hydrogen isotope retention measurement and removal from plasma facing materials
journal, July 2019
- Yu, J. H.; Baldwin, M. J.; Simmonds, M. J.
- Review of Scientific Instruments, Vol. 90, Issue 7
Plasma-Material-Interaction Research Using PISCES Linear Plasma Devices
journal, October 2019
- Baldwin, M. J.; Doerner, R. P.; Nishijima, D.
- Fusion Science and Technology, Vol. 75, Issue 7
Laser-induced breakdown spectroscopy (LIBS) as a novel technique for detecting bacterial infection in insects
journal, February 2019
- Killiny, Nabil; Etxeberria, Ed; Flores, Alejandro Ponce
- Scientific Reports, Vol. 9, Issue 1