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Title: Rapid, automated measurement of layer thicknesses on steel coin blanks using laser-induced-breakdown spectroscopy depth profiling

Journal Article · · Applied Optics
DOI:https://doi.org/10.1364/AO.46.000935· OSTI ID:20929658

We report application of a near-real-time method to determine layer thickness on electroplated coin blanks. The method was developed on a simple laser-induced-breakdown spectroscopy (LIBS) arrangement by monitoring relative emission-line intensities from key probe elements via successive laser ablation shots. This is a unique LIBS application where no other current spectroscopic method (inductively coupled plasma or x-ray fluorescence) can be applied effectively. Method development is discussed, and results with precalibrated coins are presented.

OSTI ID:
20929658
Journal Information:
Applied Optics, Vol. 46, Issue 6; Other Information: DOI: 10.1364/AO.46.000935; (c) 2007 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6935
Country of Publication:
United States
Language:
English