Study of Surface Damage caused by Laser Irradiation for Quantitative Hydrogen Analysis in Zircaloy using Laser-induced Plasma Breakdown Spectrometry
نویسندگان
چکیده
The surface damage caused by laser irradiation is studied to investigate the possibility of performing a depth-profile analysis of the hydrogen concentration in zircaloy-4 alloys using laserinduced plasma breakdown spectrometry. After laser irradiation, a heat-affected zone extending about 3 μm down from the top surface can be seen. The depth of this heat-affected zone is independent of the laser power density in the range 10 to 10 W/cm. In order to obtain the depth profile of the hydrogen concentration in zircaloy-4 alloys, the power density of laser shots must be greater than 1.3x10 W/cm.
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