| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Outline of Final Research Achievements |
Positron annihilation tomography has been developed in order to obtain the three dimensional defect distribution. Positron can be produced using a pair production by short-pulsed bremsstrahlung X-rays. In the study, the short-pulsed X-rays was irradiated uniformly into a sample and the emitted γ-rays was detected by a position sensitive and highly sensitive detector developed. The scintillator was made of Lu2SiO5：Ce with mm order lateral resolution and 0.5 ns time resolution. The performance of the developed technique has been examined in detail. Positron annihilation tomography can be nondestructively applied to the sample subjected under high temperature and high pressure conditions. In this study, we have investigated the defect behavior on hydrogen embrittlement of pure iron and the pore in silica-based glasses.
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