Quantitative visualization of tritium distribution in vanadium by tritium radioluminography

Saitoh, Hiroumi; Hishi, T; Misawa, Toshihei; Ohnishi, Toshiyuki; Noya, Youichi; Matsuzaki, Takashi; Watanabe, Takahiro

doi:10.1016/s0022-3115(98)00144-5

Cited by 24 publications

(10 citation statements)

References 13 publications

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“…The application of radioluminography methods for measuring tritium is based on registering photo-stimulated luminescence (PSL) caused by the interaction of tritium bparticles with chemicals on an image plate (IP) [25]. Only particles emitted from a sub-surface layer of thickness less than the mean free path can be detected.…”

Section: Radioluminography (Rlg)mentioning

confidence: 99%

Comparative study of the tritium distribution in metals

Perevezentsev

Bell

Rivkis

et al. 2008

Journal of Nuclear Materials

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Section: Radioluminography (Rlg)mentioning

confidence: 99%

Comparative study of the tritium distribution in metals

Perevezentsev

Bell

Rivkis

et al. 2008

Journal of Nuclear Materials

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“…Some techniques have already been developed for visualizing distribution of hydrogen localized on the surface of metals; secondary ion mass spectroscopy, [9][10][11] hydrogen microprint method, 12,13) tritium auto-radiography, [14][15][16] and so on. These techniques can provide a very clear image of the distribution of hydrogen on the surface of the metallic specimen.…”

Section: Introductionmentioning

confidence: 99%

Development of Scanning Laser-Enhanced Electrochemical Microscopy for Visualizing Hydrogen Distribution on a Steel

2003

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A Scanning Laser-Enhanced Electrochemical Microscope for Hydrogen detection (H-SLEEM) has been developed in order to in-situ visualize the distribution of hydrogen localized on a steel surface. Introduction and detection of hydrogen for the steel sheet was conducted by hydrogen permeation technique with a pair of electrochemical cells. When the hydrogen detection side under hydrogen permeation is irradiated with focused Ar laser, anodic current relating to hydrogen oxidation reaction is thermally enhanced at the irradiation spot and then anodic current increment corresponding to the hydrogen permeation rate at the spot is expected to be determined. In the case that whole the hydrogen detection side was irradiated with diffused laser, the anodic current increased and the current increment increased with an increase in the hydrogen permeation current. The use of focused laser also permitted the measurement of the anodic current increment depending on the hydrogen permeation current. The modulated laser provided more stable and reproducible current increment. When the specimen whose hydrogen entry side was masked except for a small exposed area in center was employed and the modulated laser was raster-scanned under hydrogen permeation, a very clear image of the two-dimensional distribution in the current increment corresponding to local hydrogen permeation rate on the detection side was obtained. It is concluded that the H-SLEEM can successfully visualize the localized hydrogen distribution on the steel surface.KEY WORDS: scanning laser-enhanced electrochemical microscope; hydrogen embrittlement; carbon steel; hydrogen permeation; visualization.

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“…In our previous work, we performed the quantitative observation of the hydrogen distribution in pure vanadium, 6,7) some vanadium alloys [8][9][10][11][12][13] and Ti-Cr alloy 14) by the tritium radioluminography, and showed the effect of the microstructure or constituent element on the tritium distribution in these materials. In the present work, tritium radioluminography is applied to V-4 mass%Cr-4 mass%Ti (mass% will be omitted hereafter) alloy which is one of the candidate for the first wall materials of the nuclear fusion reactor.…”

Section: Introductionmentioning

confidence: 99%

Observation of Tritium Distribution in V-4Cr-4Ti alloy by Tritium Radioluminography

et al. 2002

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Tritium distribution in V-4 mass%Cr-4 mass%Ti alloy has been observed by the tritium radioluminography, and the relation between the tritium distribution and the constituent elements of the alloy have been investigated. In the as-cast specimen, tritium concentration has been higher in the titanium enriched region, that is, the local tritium concentrations at the lower and higher titanium region are 156 and 202 mol ppb, respectively. The tritium distribution has shown a strong correlation with the titanium segregation in the interdendritic region. In the heat treated specimen, the tritium distribution has been rarely affected by the interdendritic titanium segregation. Tritium concentration at the central area and at the surrounding area in the specimen surface have been 209 and 147 mol ppb, respectively. It has been thought that this accumulation of tritium to the central area is caused by the Gorsky effect which generated due to the constraint condition of the stress field in the plate shaped specimen. In the heat treated specimen, the tritium distribution has been more strongly affected by the shape of the specimen than by the titanium segregation in it.

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Quantitative visualization of tritium distribution in vanadium by tritium radioluminography

Cited by 24 publications

References 13 publications

Comparative study of the tritium distribution in metals

Comparative study of the tritium distribution in metals

Development of Scanning Laser-Enhanced Electrochemical Microscopy for Visualizing Hydrogen Distribution on a Steel

Observation of Tritium Distribution in V-4Cr-4Ti alloy by Tritium Radioluminography

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