Detection of uranium in solids by using laser-induced breakdown spectroscopy combined with laser-induced fluorescence

Shen, X. K.; Lu, Yongfeng

doi:10.1364/ao.47.001810

Cited by 64 publications

(28 citation statements)

References 12 publications

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“…We have recently applied the technique of CW two-dimensional fluorescence spectroscopy (2DFS) to measure the correlated absorption and emission properties of laser-produced plasmas in air 17 . In addition to enhancing emission intensity 18 , the high spectral resolution of 2DFS can more effectively isolate absorption from specific transitions, even in the presence of nearby absorption/emission lines 19 . Furthermore, LIF has a more favorable measurement geometry than LAS for standoff detection applications.…”

Section: Introductionmentioning

confidence: 99%

“…Prior work on optical spectroscopy of laser-ablated uranium has been performed using a variety of uranium-containing solids, including uranium oxides 12–15, 22 , uranium-doped glasses 3, 16, 18, 23, 24 , uranium ore 22, 25 , and uranium-containing soils 6, 26 . These samples contain a range of other elements as part of their sample matrix, which complicates interpretation of the optical spectra.…”

Section: Introductionmentioning

confidence: 99%

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Two-dimensional fluorescence spectroscopy of uranium isotopes in femtosecond laser ablation plumes

Phillips

Brumfield

LaHaye

et al. 2017

Sci Rep

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We demonstrate measurement of uranium isotopes in femtosecond laser ablation plumes using two-dimensional fluorescence spectroscopy (2DFS). The high-resolution, tunable CW-laser spectroscopy technique clearly distinguishes atomic absorption from 235U and 238U in natural and highly enriched uranium metal samples. We present analysis of spectral resolution and analytical performance of 2DFS as a function of ambient pressure. Simultaneous measurement using time-resolved absorption spectroscopy provides information on temporal dynamics of the laser ablation plume and saturation behavior of fluorescence signals. The rapid, non-contact measurement is promising for in-field, standoff measurements of uranium enrichment for nuclear safety and security.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Two-dimensional fluorescence spectroscopy of uranium isotopes in femtosecond laser ablation plumes

Phillips

Brumfield

LaHaye

et al. 2017

Sci Rep

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“…Very high-resolution LIBS spectrometer was also employed for determining the isotopic composition of U and Pu [21][22][23]. Shen and Lu showed the applicability of uranium detection up to 462 ppm in glass samples by LIBS in combination with laser-induced fluorescence [24]. More recently, Jung et al demonstrated the applicability of Echelle spectrometer based LIBS system for the determination of U up to 5 wt % in normal glass samples prepared in the laboratory oven [25].…”

Section: Introductionmentioning

confidence: 99%

Analysis of barium borosilicate glass matrix for uranium determination by using ns-IR-LIBS in air and Ar atmosphere

Sarkar¹,

Mishra²,

Kaushik³

et al. 2014

Radiochimica Acta

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In this paper, an attempt to explore the use of laser induced breakdown spectroscopy (LIBS) technique for determination of uranium in the vitrified simulated high level barium borosilicate waste glass matrix was made with a commercial portable LIBS system. The emission spectrum of the waste glass being very complex, detailed study was done for proper choice of the emission lines. Investigations were carried out to optimize the experimental parameters like laser energy and acquisition delay time for the analysis. Calibration curves were obtained for two emission lines of U in these glasses. Effect of Ar atmosphere was also studied and the signal intensity was found to be ∼5 times higher than in air atmosphereThe emission lines used for normalization with vast difference in the upper energy level compared to the line of interest were found to give poor precision in air. In the Ar atmosphere, this effect was found to be much less significant and such emission lines can be used as an internal standard to achieve precise calibration curves. LIBS approach will be useful for real time determination of U in such samples, eliminating quantitative dissolution step required in many other analytical techniques like solution based ICP-MS/OES.

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“…Information vitally important in the monitoring of nuclear processing and forensics are the isotope ratios of special nuclear material. The isotope ratio of elements can be determined by measuring the atomic line shift by laser absorption and laser fluorescence, which requires an ablative prestep [3][4][5][6][7]. LIBS can also measure the isotopic line shift as both Pietsch et al and Smith et al have demonstrated [8,9].…”

Section: Introductionmentioning

confidence: 99%

Practical high-resolution detection method for laser-induced breakdown spectroscopy

Effenberger

Scott

2012

Appl. Opt.

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A Fabry-Perot etalon was coupled to a Czerny-Turner spectrometer to acquire high-resolution measurements in laser-induced breakdown spectroscopy (LIBS). The spectrometer was built using an inexpensive etalon coupled to a standard 0.5 m imaging spectrometer. The Hg emission doublet at 313.2 nm was used to evaluate instrument performance because it has a splitting of 29 pm. The 313.2 nm doublet was chosen due to the similar splitting seen in isotope splitting from uranium at 424.437 nm, which is 25 pm. The Hg doublet was easily resolved from a continuous-source Hg lamp with a 2 s acquisition. The doublet was also resolved in LIBS spectra of cinnabar (HgS) from the accumulation of 600 laser shots at rate of 10 Hz, or 1 min, under a helium atmosphere. In addition to the observed splitting of the 313.2 nm Hg doublet, the FWHM of the 313.1844 nm line from the doublet is reported at varying helium atmospheric pressures. The high performance, low cost, and compact footprint make this system highly competitive with 2 m double-pass Czerny-Turner spectrometers.

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Detection of uranium in solids by using laser-induced breakdown spectroscopy combined with laser-induced fluorescence

Cited by 64 publications

References 12 publications

Two-dimensional fluorescence spectroscopy of uranium isotopes in femtosecond laser ablation plumes

Two-dimensional fluorescence spectroscopy of uranium isotopes in femtosecond laser ablation plumes

Analysis of barium borosilicate glass matrix for uranium determination by using ns-IR-LIBS in air and Ar atmosphere

Practical high-resolution detection method for laser-induced breakdown spectroscopy

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