Investigation of zirconium oxide growth in nuclear fuel element claddings by micro-Raman, ellipsometry, and Laser-Induced Breakdown Spectroscopy

2020 ◽  
Vol 111 ◽  
pp. 103134
Author(s):  
Leonardo H. Paulucci ◽  
Tamiris de Almeida ◽  
Eliel E. Farias ◽  
Paola Corio ◽  
Ladário da Silva ◽  
...  
Keyword(s):  
Fuel Element ◽  
Nuclear Fuel ◽  
Zirconium Oxide ◽  
Laser Induced Breakdown Spectroscopy ◽  
Oxide Growth ◽  
Breakdown Spectroscopy ◽  
Nuclear Fuel Element ◽  
Laser Induced Breakdown

Enhancement of intensity in microwave-assisted laser-induced breakdown spectroscopy for remote analysis of nuclear fuel recycling

2014 ◽  
Vol 29 (5) ◽  
pp. 886-892 ◽  
Author(s):  
Motonobu Tampo ◽  
Masabumi Miyabe ◽  
Katsuaki Akaoka ◽  
Masaki Oba ◽  
Hironori Ohba ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Nuclear Fuel ◽  
Emission Intensity ◽  
Ablation Plume ◽  
Wire Antenna ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Microwave Assisted ◽  
Laser Induced Breakdown ◽  
Remote Analysis

In this study, an enhancement of emission intensity from laser ablation plume was achieved by coupling a pulsed microwave using a simple wire antenna

scholarly journals Laser-induced breakdown spectroscopy of light water reactor simulated used nuclear fuel: Main oxide phase

2017 ◽  
Vol 133 ◽  
pp. 26-33 ◽  
Author(s):  
Keri R. Campbell ◽  
Elizabeth J. Judge ◽  
James E. Barefield ◽  
James P. Colgan ◽  
David P. Kilcrease ◽  
...  
Keyword(s):  
Nuclear Fuel ◽  
Oxide Phase ◽  
Light Water Reactor ◽  
Laser Induced Breakdown Spectroscopy ◽  
Light Water ◽  
Water Reactor ◽  
Breakdown Spectroscopy ◽  
Used Nuclear Fuel ◽  
Laser Induced Breakdown

scholarly journals Laser-Induced Breakdown Spectroscopy for Nuclear Fuel Material

2014 ◽  
Vol 42 (12) ◽  
pp. 918
Author(s):  
Katsuaki AKAOKA ◽  
Masabumi MIYABE ◽  
Haruyoshi OTOBE ◽  
Ikuo WAKAIDA
Keyword(s):  
Nuclear Fuel ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Fuel Material

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.

Nanosecond laser-induced breakdown assisted by femtosecond laser pre-ionization in air: the effect on spatial resolution and continuous radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20701
Author(s):  
Bo Li ◽  
Xiaofeng Li ◽  
Zhifeng Zhu ◽  
Qiang Gao
Keyword(s):  
Femtosecond Laser ◽  
Spatial Resolution ◽  
Laser Induced Breakdown Spectroscopy ◽  
Nanosecond Laser ◽  
Breakdown Threshold ◽  
Powerful Technique ◽  
Breakdown Spectroscopy ◽  
Continuous Radiation ◽  
Laser Induced Breakdown

Laser-induced breakdown spectroscopy (LIBS) is a powerful technique for quantitative diagnostics of gases. The spatial resolution of LIBS, however, is limited by the volume of plasma. Here femtosecond-nanosecond dual-pulsed LIBS was demonstrated. Using this method, the breakdown threshold was reduced by 80%, and decay of continuous radiation was shortened. In addition, the volume of the plasma was shrunk by 85% and hence, the spatial resolution of LIBS was significantly improved.

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