Laser-Induced Breakdown Spectroscopy of F82H steel

Abstract

F82H steel is one of the wall materials for prototype fusion reactor. Plasma-wall interaction is a major problem for characteristic of the fusion reactor, and its understanding will be followed by surface diagnostic of the wall. In-situ method for the surface compositional analysis without air exposure will be needed, and laser-induced breakdown spectroscopy (LIBS) is one of the major candidates. The LIBS is remote sensing technique, easy to perform, good for depth profile resolution, and able to done in short measuring time. Objective of this research is to confirm an availability of LIBS with 355nm laser pulse for F82H steel.