Laser ablation absorption spectroscopy for remote analysis of uranium

Miyabe, Masabumi ; Oba, Masaki ; Iimura, Hideki ; Akaoka, Katsuaki ; Maruyama, Yoichiro; Oba, Hironori ; Tampo, Motonobu; Wakaida, Ikuo

To determine experimental conditions suitable for isotope analysis, we studied the plume dynamics of uranium. A uranium oxide sample was ablated by 2nd harmonic radiation from a Nd:YAG laser at a fluence of 0.5 J/cm $^{2}$ . The temporal evolution of the ablation plume was investigated in 800 Pa helium environment. It was found that the observation at 3-510 $^{-6}$ s after the ablation at the height of about 2.5 mm are most suited for obtaining higher sensitivity. Using the established conditions, we obtained the limit of detection of the isotope ratio ( $^{235}$ U/ $^{238}$ U) to be 0.01%. In addition, the limit of detection of elemental abundance of uranium in uranium glass was also evaluated.

Language	:	English
Journal	:	Hyperfine Interactions
Volume	:	216
Number	:	1-3
Pages	:	p.71 - 77
Publication Year/Month	:	2013/04
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Paper URL	:	https://doi.org/10.1007/s10751-013-0845-2
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Keywords	:	no keyword
Research Facility	:	JRR-3実験利用棟(第2棟)
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Article of JAEA R&D Review	:
Cooperating Institute	:	文部科学省

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Registration No. : AA20121000
JAEA Abstracts No. : 41000669
Paper Submission No. : 12444

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