Trace xenon detection in helium environment <i>via</i> laser-induced breakdown spectroscopy

Burger, M.; Garrett, L.; Burak, Adam; Petrov, Victor; Manera, Annalisa; Sabharwall, Piyush; Sun, Xiaodong; Jovanovic, Igor

doi:10.1039/d0ja00513d

Cited by 22 publications

(19 citation statements)

References 29 publications

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“…Similarly, Burger et al found that Xe could be detected at levels of 0.2 ppm under a He atmosphere with 10 4 laser shots. 12 These studies corroborated that LIBS is a useful technique as a multi-gas sensor with strong elemental selectivity. Previously, a LIBS measurement system was shown to have the ability to simultaneously monitor multiple aerosol lanthanides (Gd, Nd, and Sm) in real time using chemometric regression models.…”

Section: Introductionmentioning

confidence: 59%

“…After further investigation, the peak in question was filtered out by the genetic algorithm feature selection process because the peak exhibited self-absorption issues, which were also observed by Burger et al above 1000 ppm. 12 Fortunately, Xe(I) 881.94 nm peak has a similar upper energy level providing the same benefit of being observable at lower concentrations. The single identified peak for Cs is to be expected with the PLS model only covering 890–895 nm.…”

Section: Resultsmentioning

confidence: 94%

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Monitoring Noble Gases (Xe and Kr) and Aerosols (Cs and Rb) in a Molten Salt Reactor Surrogate Off-Gas Stream Using Laser-Induced Breakdown Spectroscopy (LIBS)

2022

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This study with surrogate materials shows that laser-induced breakdown spectroscopy (LIBS) is a robust tool with promising capability toward monitoring gaseous (Xe and Kr) and aerosol (Cs and Rb) species in an off-gas stream from a molten salt reactor (MSR). MSRs will continually evolve fission products into the cover gas flowing across the reactor headspace. The cover gas entrains Xe and Kr gases, along with aerosol particles, before passing into an off-gas treatment system. Univariate models of Xe and Kr peaks showed a strong correlation to concentration indicated by their coefficients of determination of 0.983 and 0.997, respectively. Multivariate models were built for all four analytes using partial least squares regression coupled with preprocessing steps including normalization, trimming, and/or genetic algorithm derived filters. The models were evaluated by predicting the concentrations of the analytes in four validation samples, in which all calibration models were successfully validated at a confidence interval of 99.9%. Lastly, pressure controllers were used to regulate the mass flow rate of Kr flowing into the measurement cell in sinusoidal and stepwise waveforms to test the real-time monitoring capabilities of the regression models. Both univariate and partial least squares Kr models were able to successfully quantify the gas concentration in the real-time evaluation. The root mean squared error of prediction (RMSEP) values for these real-time tests were calculated to be 0.051, 0.060, and 0.121 mol% demonstrating the measurement systems’ capability to perform online monitoring with acceptable accuracy.

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Section: Introductionmentioning

confidence: 59%

Section: Resultsmentioning

confidence: 94%

Monitoring Noble Gases (Xe and Kr) and Aerosols (Cs and Rb) in a Molten Salt Reactor Surrogate Off-Gas Stream Using Laser-Induced Breakdown Spectroscopy (LIBS)

2022

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“…Research into the trace inert gas detection is also largely driven by the industrial and environmental sectors with the detection of He, Ar, and Xe. 7–11…”

Section: Introductionmentioning

confidence: 99%

“…10 Recently, Burger et al demonstrated trace Xe detection in He mixtures for monitoring nuclear fuel failure. 11…”

Section: Introductionmentioning

confidence: 99%

“…Research into the trace inert gas detection is also largely driven by the industrial and environmental sectors with the detection of He, Ar, and Xe. [7][8][9][10][11] The quantitative determination of noble gases can be achieved by using laser-based spectroscopies such as laser absorption spectroscopy (LAS) 12 and laser-induced breakdown spectroscopy (LIBS). The LAS technique is very sensitive and advantageous in terms of limit of detection (LOD) compared to LIBS, however, the experimental procedure is tedious and time-consuming.…”

Section: Introductionmentioning

confidence: 99%

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ANN-LIBS analysis of mixture plasmas: detection of xenon

Saeidfirozeh

Myakalwar

Kubelík

et al. 2022

J. Anal. At. Spectrom.

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Population inversion mechanism of optically pumped metastable rare gas based on laser-induced preionization

Gai

et al. 2023

Journal of Luminescence

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Trace xenon detection in helium environment via laser-induced breakdown spectroscopy

Abstract: We assess the sensitivity of LIBS for trace xenon detection in a helium buffer and its suitability for online monitoring of reactor fuel integrity.

Cited by 22 publications

References 29 publications

Monitoring Noble Gases (Xe and Kr) and Aerosols (Cs and Rb) in a Molten Salt Reactor Surrogate Off-Gas Stream Using Laser-Induced Breakdown Spectroscopy (LIBS)

Monitoring Noble Gases (Xe and Kr) and Aerosols (Cs and Rb) in a Molten Salt Reactor Surrogate Off-Gas Stream Using Laser-Induced Breakdown Spectroscopy (LIBS)

ANN-LIBS analysis of mixture plasmas: detection of xenon

Population inversion mechanism of optically pumped metastable rare gas based on laser-induced preionization

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