| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2020: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2019: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Fiscal Year 2018: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
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| Outline of Final Research Achievements |
By using cosmic ray muons, which have high penetrating power to materials, it is possible to visualize the interior of huge artificial structures such as pyramids and natural objects such as volcanoes as seen with X-ray radiography. In this study, we developed the basic technology of "cosmic ray muon tomography," a method to estimate the three-dimensional position and shape of a void by analyzing it three-dimensionally instead of the conventional two-dimensional visualization, through simultaneous observation and analysis at multiple points using nuclear emulsion plates of the void discovered inside the Khufu Pyramid in Egypt. As a result of this development, the location and shape of a corridor-like void discovered behind a gabled structure called Chevrons on the north face of the Khufu Pyramid was successfully estimated with an accuracy of less than 10 cm.
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