title: Preliminary design of laser-induced breakdown spectroscopy for proto-Material Plasma Exposure eXperiment.
abstract: 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.affiliation: Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA.
authors.forename: G
authors.initials: G
authors.lastname: Shaw
authors.affiliation: Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA.
authors.forename: M Z
authors.initials: MZ
authors.lastname: Martin
authors.affiliation: Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA.
authors.forename: R
authors.initials: R
authors.lastname: Martin
authors.affiliation: Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA.
authors.forename: T M
authors.initials: TM
authors.lastname: Biewer