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Title: Preliminary design of laser-induced breakdown spectroscopy for proto-Material Plasma Exposure eXperiment

Laser-induced breakdown spectroscopy (LIBS) is a technique for measuring surface matter composition. LIBS is performed by focusing laser radiation onto a target surface, ablating the surface, forming a plasma, and analyzing the light produced. LIBS surface analysis is a possible diagnostic for characterizing plasma-facing materials in ITER. Oak Ridge National Laboratory has enabled the initial installation of a laser-induced breakdown spectroscopy diagnostic on the prototype Material-Plasma Exposure eXperiment (Proto-MPEX), which strives to mimic the conditions found at the surface of the ITER divertor. This paper will discuss the LIBS implementation on Proto-MPEX, preliminary design of the fiber optic LIBS collection probe, and the expected results.
Authors:
 [1] ;  [2] ; ; ;  [1]
  1. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
22308792
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ABUNDANCE; EXPERIMENTAL DATA; FIBER OPTICS; FIRST WALL; FOCUSING; ITER TOKAMAK; LASER RADIATION; LASER TARGETS; PLASMA; PROBES; SPECTROSCOPY; SURFACE PROPERTIES; SURFACES; VISIBLE RADIATION