Laser-induced breakdown spectroscopy measurements of uranium and thorium powders and uranium ore |
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| Institution: | 1. Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM 87545, United States;2. Manufacturing Engineering and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87545, United States;1. Pacific Northwest National Laboratory, Richland, WA 99352, USA;2. Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802, USA;3. Department of Nuclear and Radiological Sciences, University of Michigan, Ann Arbor, MI 48109, USA;4. School of Nuclear Engineering, Purdue University, West Lafayette, IN 47906, USA;1. Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA;2. Y-12 National Security Complex, Oak Ridge, TN 37830, USA;3. Ocean University of China, Qingdao, 266100, PR China;4. Applied Spectra, 46661 Fremont Blvd., Fremont, CA 94538, USA;5. Department of Physics, Florida Agriculture and Mechanical University, Tallahassee, FL 32310, USA;1. Homi Bhabha National Institute, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India;2. Materials Chemistry & Metal Fuel Cycle Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India;3. Raja Ramanna Fellow, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India |
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| Abstract: | Laser-induced breakdown spectroscopy (LIBS) was used to analyze depleted uranium and thorium oxide powders and uranium ore as a potential rapid in situ analysis technique in nuclear production facilities, environmental sampling, and in-field forensic applications. Material such as pressed pellets and metals, has been extensively studied using LIBS due to the high density of the material and more stable laser-induced plasma formation. Powders, on the other hand, are difficult to analyze using LIBS since ejection and removal of the powder occur in the laser interaction region. The capability of analyzing powders is important in allowing for rapid analysis of suspicious materials, environmental samples, or trace contamination on surfaces since it most closely represents field samples (soil, small particles, debris etc.). The rapid, in situ analysis of samples, including nuclear materials, also reduces costs in sample collection, transportation, sample preparation, and analysis time. Here we demonstrate the detection of actinides in oxide powders and within a uranium ore sample as both pressed pellets and powders on carbon adhesive discs for spectral comparison. The acquired LIBS spectra for both forms of the samples differ in overall intensity but yield a similar distribution of atomic emission spectral lines. |
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