JOPSS - Search Results

Oral presentation

Analysis and optimization of laser induced breakdown spectroscopy for nuclear material

Akaoka, Katsuaki; Miyabe, Masabumi; Otobe, Haruyoshi; Wakaida, Ikuo

no journal, ,

For the remote analysis of low DF TRU (Decontamination Factor Transuranic) fuel, we applied laser induced breakdown spectroscopy (LIBS) to uranium oxide, which included a small amount of calcium oxide as a simulated sample of impurities, and the spectrum emitted from laser-breakdown plasma was examined. To improve analysis precision of the ablated elements, we measured breakdown spectrum of Ca and U under the various experimental conditions such as laser power, observation delay time and gas pressure, optimized them, and obtained 5mJ, 5s and 2kPa. The spectrum was deconvoluted into each peak of some spectra component on U and Nd. And the result, actual intensity of Nd component intermingled in U was determined quantitatively. In order to evaluate the linearity in the impurity analysis, the experiments with various concentration of Nd were carried out.

Oral presentation

Quantitative analysis and LIBS spectra analysis using the least-squares method

Akaoka, Katsuaki; Oba, Masaki; Miyabe, Masabumi; Wakaida, Ikuo

no journal, ,

For quantitative analysis of the mixed oxide (MOX) fuel using Laser Induced Breakdown Spectroscopy (LIBS), great deal of analysis and identification of spectra are necessary. Therefore, we tried "the analysis of the LIBS spectrum by the least-squares method" as quantitative analysis without identification and analysis of the spectra. As a result, the calibration curves for quantitative analysis could be got without them.

Oral presentation

Development of quick and remote analysis for severe accident reactor, 2-4; Estimation of LIBS spectra using the least-square method

Akaoka, Katsuaki; Oba, Masaki; Miyabe, Masabumi; Wakaida, Ikuo

no journal, ,

For quantitative analysis of the fuel debris using Laser Induced Breakdown Spectroscopy (LIBS), the measurement of the spectrum data for combination of materials is necessary. Therefore, we tried the estimate of the unknown elemental combination mixture spectrum, using "the analysis of the LIBS spectrum by the least-squares method". As a result, estimated spectra accorded with an actual spectra well.

Oral presentation

Analysis using the least-squares method of two-dimensional distribution of the simulated fuel debris measured by the LIBS

Akaoka, Katsuaki; Ogawa, Chihiro*; Tagawa, Akihiro; Wakaida, Ikuo

no journal, ,

The two dimensional distribution measurement is possible using the laser induced breakdown spectroscopy. We analysed the two-dimensional composition distribution of the simulated fuel debris measured by LIBS using the least-squares method. As the result, distribution of the contribution ratios of the simulated fuel debris provided using the least-squares method expressed element distribution of them well.

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

Application of laser-induced breakdown emission spectroscopy to powders

Akaoka, Katsuaki; Wakaida, Ikuo

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

Uranium isotope measurement by microwave-enhanced LIBS

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

no journal, ,

Oral presentation

Development of quick and remote analysis for severe accident reactor, 8-3; Measurement of uranium isotopes by LIBS with microwave

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

no journal, ,

no abstracts in English

Oral presentation

In-situ analysis of fuel debris using laser

Karino, Takahiro

no journal, ,

no abstracts in English

Oral presentation

Development of quick and remote analysis for severe accident reactor, 9-5; Effect of composition ratio on plasma temperature in laser-induced breakdown spectroscopy (LIBS)

Karino, Takahiro; Akaoka, Katsuaki; Wakaida, Ikuo

no journal, ,

no abstracts in English

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Analysis and optimization of laser induced breakdown spectroscopy for nuclear material

Quantitative analysis and LIBS spectra analysis using the least-squares method

Development of quick and remote analysis for severe accident reactor, 2-4; Estimation of LIBS spectra using the least-square method

Analysis using the least-squares method of two-dimensional distribution of the simulated fuel debris measured by the LIBS

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

Application of laser-induced breakdown emission spectroscopy to powders

Deviation from focal point and angle dependence in LIBS

Uranium isotope measurement by microwave-enhanced LIBS

Development of quick and remote analysis for severe accident reactor, 8-3; Measurement of uranium isotopes by LIBS with microwave

In-situ analysis of fuel debris using laser

Development of quick and remote analysis for severe accident reactor, 9-5; Effect of composition ratio on plasma temperature in laser-induced breakdown spectroscopy (LIBS)