Measurement of trace chromium on structural steel surface from a nuclear power plant using dual-pulse fiber-optic laser-induced breakdown spectroscopy

2020 ◽  
Vol 533 ◽  
pp. 147497
Author(s):  
Yan Qiu ◽  
Jian Wu ◽  
Han Yu ◽  
I.B. Gornushkin ◽  
Jilong Li ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Structural Steel ◽  
Nuclear Power ◽  
Steel Surface ◽  
Fiber Optic ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

scholarly journals Detection of Gadolinium in Surrogate Nuclear Fuel Debris Using Fiber-Optic Laser-Induced Breakdown Spectroscopy under Gamma Irradiation

2020 ◽  
Vol 10 (24) ◽  
pp. 8985
Author(s):  
Ryuzo Nakanishi ◽  
Morihisa Saeki ◽  
Ikuo Wakaida ◽  
Hironori Ohba
Keyword(s):  
Gamma Irradiation ◽  
Nuclear Fuel ◽  
Mixed Oxide ◽  
Nuclear Power ◽  
Fiber Optic ◽  
Emission Spectra ◽  
Emission Lines ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

Fiber-optic laser-induced breakdown spectroscopy (FO-LIBS) was applied to a qualitative and quantitative analysis of gadolinium (Gd) in mixed oxide samples, simulating nuclear fuel debris in the damaged reactors of the Fukushima Daiichi Nuclear Power Station. The surrogate debris was prepared from mixed oxide materials containing Gd2O3, with varying Gd concentrations. The emission spectra of the surrogate debris show that the optical emission lines at 501.5 nm and 510.3 nm are suitable for Gd detection in the nuclear fuel debris. LIBS measurements were further performed under gamma irradiation (0–10 kGy/h), resulting in a decrease in spectral intensities due to radiation-induced damage to the optical fiber. For quantification of Gd, robust calibration curves against gamma irradiation were established from the intensity ratio of Gd (501.5 nm)/Ce (474.5 nm) emission lines, yielding the limits of detection for Gd in the range of 0.03–0.08 wt%. These results demonstrate that FO-LIBS is a potential tool for in situ and remote analysis of nuclear fuel debris.

The influence of target surface position on plasma characteristics in dual-pulse fiber-optic laser-induced breakdown spectroscopy

2021 ◽  
Vol 127 (4) ◽  
Author(s):  
Yuhua Hang ◽  
Fei Xue ◽  
Tao Liu ◽  
Bin Zhu ◽  
Kaixing Liao ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Target Surface ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Plasma Characteristics

Detection of Metals in the Environment Using a Portable Laser-Induced Breakdown Spectroscopy Instrument

1996 ◽  
Vol 50 (2) ◽  
pp. 222-233 ◽  
Author(s):  
Karen Y. Yamamoto ◽  
David A. Cremers ◽  
Monty J. Ferris ◽  
Leeann E. Foster
Keyword(s):  
Detection Limit ◽  
Fiber Optic ◽  
Laser Induced Breakdown Spectroscopy ◽  
Portable Instrument ◽  
Fiber Optic Cable ◽  
Breakdown Spectroscopy ◽  
Ccd Detector ◽  
Sampling Probe ◽  
Laser Induced Breakdown ◽  
Spectrally Resolved

A portable instrument, based on laser-induced breakdown spectroscopy (LIBS), has been developed for the detection of metal contaminants on surfaces. The instrument has a weight of 14.6 kg, fits completely into a small suitcase (46 × 33 × 24 cm), and operates from 115 V ac. The instrument consists of a sampling probe connected to the main analysis unit by electrical and optical cabling. The hand-held probe contains a small laser to generate laser sparks on a surface and a fiber-optic cable to collect the spark light. The collected light is spectrally resolved and detected with the use of a compact spectrograph/CCD detector system. The instrument has been evaluated for the analysis of metals in the environment: Ba, Be, Pb, and Sr in soils; Pb in paint; and Be and Pb particles collected on filters. Detection limits in ppm for metals in soils were 265 (Ba), 9.3 (Be), 298 (Pb), and 42 (Sr). The detection limit for Pb in paint was 0.8% (8000 ppm), corresponding to 0.052 mg/cm2. The higher limit obtained for Pb in paint is attributed to the use of the 220.35-nm Pb(II) line instead of the stronger 405.78-nm Pb(I) line used for soils. Spectral interferences prevented use of the 405.78-nm line to determine Pb in paint. The surface detection limit for Be particles on filters was dependent on particle size and ranged from 21 to 63 ng/cm2. The detection limit for Pb particles on filters was 5.6 μg/cm2.

In Situ Determination of Lead in Paint by Laser-Induced Breakdown Spectroscopy Using a Fiber-Optic Probe

1996 ◽  
Vol 68 (6) ◽  
pp. 977-981 ◽  
Author(s):  
Brian J. Marquardt ◽  
Scott R. Goode ◽  
S. Michael Angel
Keyword(s):  
Fiber Optic ◽  
Laser Induced Breakdown Spectroscopy ◽  
Fiber Optic Probe ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Optic Probe
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