100 m fiber-coupled microchip laser-induced breakdown spectroscopy for remote elemental analysis applications

Batsaikhan, M.; Oba, Hironori; Wakaida, Ikuo

Optics Express (Internet), 32(25), p.45158 - 45170, 2024/12

https://doi.org/10.1364/OE.541447

Two-dimensional elemental mapping of simulated fuel debris using laser-induced breakdown spectroscopy

Batsaikhan, M.; Akaoka, Katsuaki; Saeki, Morihisa*; Karino, Takahiro; Oba, Hironori; Wakaida, Ikuo

Journal of Nuclear Science and Technology, 61(5), p.658 - 670, 2024/05

https://doi.org/10.1080/00223131.2023.2255186

no abstracts in English

レーザ装置、元素分析システム、及び元素分析方法

Batsaikhan, M.; 大場 弘則

not registered

JP, 2023-119201  Patent licensing information

【課題】レーザ光を用いて対象物に含有する元素を分析する際に、対象物の表面の破壊を抑制し、高精度な元素分析を可能とする。 【解決手段】対象物(M)に対してレーザ光(22)を照射するレーザ照射部(40)を備えたレーザ装置(30)において、レーザ光(22)の照射により対象物(M)から生じる音波(24)を取得する音波取得部(50)を備え、レーザ照射部(40)は、音波取得部(50)にて取得された音波に基づいて所定の焦点位置に制御される、ことを特徴とする。

A Laser-acoustic technique for simultaneous measurement of elemental and surface imaging of fuel debris

Batsaikhan, M.; Oba, Hironori; Wakaida, Ikuo

no journal, , 

Development of quick and remote analysis for severe accident reactor, 8-4; Development of acoustic-wave assisted microchip LIBS technique for simultaneous measurement of elemental mapping and surface recognition of nuclear fuel debris

Batsaikhan, M.; Oba, Hironori; Karino, Takahiro; Akaoka, Katsuaki; Wakaida, Ikuo

no journal, , 

Technology development for abbreviated (in-situ) analysis of fuel debris, 3; Demonstration of fiber-delivered LIBS for application to decommissioning sites, 2; LIBS performance evaluation using spent nuclear fuel.

Batsaikhan, M.; Oba, Hironori*; Akaoka, Katsuaki; Karino, Takahiro; Iwata, Yoshihiro; Wakaida, Ikuo*; Eto, Yoshinori*; Ouchi, Atsushi*; Sasa, Katsuaki*; Sakamoto, Kan*

no journal, , 

We have developed a fiber-delivered laser-induced breakdown spectroscopy (fiber-LIBS) system for the remote analysis of nuclear fuel materials inside and outside the reactor in the decommissioning of Fukushima Daiichi nuclear power station. In this study, we evaluated the detection limit of the fiber-LIBS using samples containing unirradiated U, Zr, Fe, etc., and demonstrated the 2D elemental analysis of simulated samples containing spent fuel under a high dose rate environment.

Technology development for abbreviated (in-situ) analysis of fuel debris, 2; Demonstration of fiber-delivered LIBS for application to decommissioning sites, 1; Quantitative evaluation in long distance and high radiation environments

Oba, Hironori*; Nakanishi, Ryuzo*; Batsaikhan, M.; Wakaida, Ikuo*

no journal, , 

We have developed a fiber-delivered laser-induced breakdown spectroscopy (fiber-LIBS) system equipped with a microchip laser for the remote analysis of nuclear fuel materials inside and outside the reactor in the decommissioning of Fukushima Daiichi nuclear power station. We demonstrated the feasibility of ultra-long LIBS analysis of over 300 m using a universal fiber connector, and evaluated the characteristics of microchip-LIBS analysis in a high radiation environment using calibration curves, demonstrating that they remain unchanged even in a high dose rate of 1 kGy/h.

Challenges for screening of nuclear fuel debris by innovative spectral imaging and its verification by LIBS mapping, 3; Detection of uranium in simulated fuel debris samples by acoustic wave-assisted microchip laser-induced breakdown spectroscopy

Batsaikhan, M.; Oba, Hironori*; Karino, Takahiro; Iwata, Yoshihiro; Akaoka, Katsuaki; Wakaida, Ikuo*; Sakaguchi, Chisato*; Sakamoto, Kan*; Muta, Hiroaki*

no journal, ,