The detection of He in tungsten following ion implantation by laser-induced breakdown spectroscopy
- Univ. of Tennessee, Knoxville, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Laser-induced breakdown spectroscopy (LIBS) results are presented that provide depth-resolved identification of He implanted in polycrystalline tungsten (PC-W) targets by a 200 keV He+ ion beam, with a surface temperature of approximately 900 °C and a peak fluence of 1023 m–2. He retention, and the influence of He on deuterium and tritium recycling, permeation, and retention in PC-W plasma facing components are important questions for the divertor and plasma facing components in a fusion reactor, yet are difficult to quantify. The purpose of this work is to demonstrate the ability of LIBS to identify helium in tungsten; to investigate the sensitivity of laser parameters including, laser energy and gate delay, that directly influence the sensitivity and depth resolution of LIBS; and to perform a proof-of-principle experiment using LIBS to measure relative He intensities as a function of depth. In conclusion, the results presented demonstrate the potential not only to identify helium but also to develop a methodology to quantify gaseous impurity concentration in PC-W as a function of depth.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1439159
- Journal Information:
- Applied Surface Science, Journal Name: Applied Surface Science Journal Issue: PB Vol. 427; ISSN 0169-4332
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
| Atomic spectrometry update. Review of advances in the analysis of metals, chemicals and materials 
 | journal | January 2013 | 
| Atomic spectrometry update: review of advances in the analysis of metals, chemicals and materials 
 | journal | January 2017 | 
| Atomic spectrometry update: review of advances in the analysis of metals, chemicals and materials 
 | journal | January 2018 | 
| Atomic spectrometry update: review of advances in the analysis of metals, chemicals and materials 
 | journal | January 2020 | 
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