Abstract

Detection of uranium in solids by using laser-induced breakdown spectroscopy has been investigated in combination with laser-induced fluorescence. An optical parametric oscillator wavelength-tunable laser was used to resonantly excite the uranium atoms and ions within the plasma plumes generated by a Q-switched Nd:YAG laser. Both atomic and ionic lines can be selected to detect their fluorescence lines. A uranium concentration of 462ppm in a glass sample can be detected by using this technique at an excitation wavelength of 385.96nm for resonant excitation of U II and a fluorescence line wavelength of 409.0nm from U II.

© 2008 Optical Society of America

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