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Journal Articles

Development of a radiation tolerant laser-induced breakdown spectroscopy system using a single crystal micro-chip laser for remote elemental analysis

Tamura, Koji; Nakanishi, Ryuzo; Oba, Hironori; Karino, Takahiro; Shibata, Takuya; Taira, Takunori*; Wakaida, Ikuo

Journal of Nuclear Science and Technology, 8 Pages, 2024/00

Journal Articles

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, 13 Pages, 2023/00

no abstracts in English

Oral presentation

Oral presentation

Oral presentation

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

Batsaikhan, M.; Karino, Takahiro; Shibata, Takuya; Akaoka, Katsuaki; Wakaida, Ikuo

no journal, , 

Oral presentation

Calibration-free quantitative analysis of Laser-Induced Breakdown Spectroscopy

Akaoka, Katsuaki; Karino, Takahiro; Wakaida, Ikuo

no journal, , 

no abstracts in English

Oral presentation

Effect of angle dependence and deviation from focal position on calibration curve analysis in LIBS

Karino, Takahiro; Akaoka, Katsuaki; Wakaida, Ikuo

no journal, , 

no abstracts in English

Oral presentation

Laser remote analysis for decommissioning of Fukushima Daiichi Nuclear Power Station

Wakaida, Ikuo; Oba, Hironori; Akaoka, Katsuaki; Shibata, Takuya; Nakanishi, Ryuzo; Karino, Takahiro

no journal, , 

no abstracts in English

Oral presentation

Laser remote analysis for decommissioning of Fukushima Daiichi Nuclear Power Station (FDNPS) and its application for radioactive sampled materials

Wakaida, Ikuo; Oba, Hironori; Nakanishi, Ryuzo; Akaoka, Katsuaki; Shibata, Takuya; Karino, Takahiro

no journal, , 

Oral presentation

Effect of deviation from focal point and angle dependence in laser-induced breakdown spectroscopy (LIBS)

Karino, Takahiro; Akaoka, Katsuaki; Wakaida, Ikuo

no journal, , 

no abstracts in English

Oral presentation

Oral presentation

Research and development of laser remote analysis for decommissioning of Fukushima Daiichi Nuclear Power Station

Wakaida, Ikuo; Oba, Hironori; Akaoka, Katsuaki; Shibata, Takuya; Nakanishi, Ryuzo; Karino, Takahiro; Sakamoto, Kan*; Ikeda, Yuji*; Taira, Takunori*

no journal, , 

no abstracts in English

Oral presentation

Deviation from focal point and angle dependence in LIBS

Karino, Takahiro; Akaoka, Katsuaki; Wakaida, Ikuo

no journal, , 

no abstracts in English

Oral presentation

LIBS for "Fukushima"; Current results and challenge as a remote in-situ screening analysis

Wakaida, Ikuo; Oba, Hironori; Oba, Hironori*; Akaoka, Katsuaki; Karino, Takahiro; Nakanishi, Ryuzo*; Sakamoto, Kan*; Ikeda, Yuji*; Taira, Takunori*

no journal, , 

Oral presentation

Challenging and development on radiation hardend laser remote analysis for in-situ screening of nuclear fuel debris in decommissioning of Fukushima Daiichi Nuclear Power Station

Wakaida, Ikuo; Oba, Hironori; Akaoka, Katsuaki; Karino, Takahiro; Nakanishi, Ryuzo*; Sakamoto, Kan*; Ikeda, Yuji*; Taira, Takunori*

no journal, , 

Oral presentation

Uranium isotope measurement by microwave-enhanced LIBS

Karino, Takahiro; Akaoka, Katsuaki; Oba, Hironori; Wakaida, Ikuo; Soriano, J. K.*; Ikeda, Yuji*

no journal, , 

Oral presentation

Fiber-coupled LIBS analysis using a microchip laser in a harsh environment

Oba, Hironori; Akaoka, Katsuaki; Karino, Takahiro; Wakaida, Ikuo; Tamura, Koji*; Nakanishi, Ryuzo*; Sakamoto, Kan*; Taira, Takunori*

no journal, , 

Development of remote inspection and elemental analysis methods in a harsh radiation environment is required, such as inspection of the nuclear fuel debris at the bottom of the post-accident nuclear reactor (Tokyo Electric Power Company, Fukushima Daiichi Nuclear Power Plant). Laser-induced breakdown spectroscopy (LIBS) has been utilized as an effective qualitative and quantitative analytical method for elemental analysis. Inspecting the damaged reactor vessels requires a longer fiber-optic (FO) cable, which significantly attenuates the delivered laser energy by absorption and scattering in the fiber. We report on the first trial of our FO-LIBS system using the microchip laser (MCL) to identify and quantify elements in surrogate nuclear fuel debris under gamma irradiation, the results of trials on surrogate debris analysis, containing uranium oxide, using the MCL, and the results of 100 m-long fiber-delivered LIBS.

Oral presentation

Challenge of in-situ, on-site laser remote analysis for decommissioning of "Fukushima Daiichi Nuclear PowerStation"

Wakaida, Ikuo; Oba, Hironori; Akaoka, Katsuaki; Karino, Takahiro; Nakanishi, Ryuzo*; Taira, Takunori*; Sakamoto, Kan*; Ikeda, Yuji*

no journal, , 

no abstracts in English

26 (Records 1-20 displayed on this page)