Two-dimensional measurement of natural radioactivity of granitic rocks by photostimulated luminescence technique.
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- Hareyama Mihoko
- Department of Geoscience and Technology, Graduate School of Engineering, Tohoku University
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- Tsuchiya Noriyoshi
- Department of Geoscience and Technology, Graduate School of Engineering, Tohoku University
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- Takebe Masahiro
- Department of Geoscience and Technology, Graduate School of Engineering, Tohoku University
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- Chida Tadashi
- Department of Geoscience and Technology, Graduate School of Engineering, Tohoku University
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Abstract
Two-dimensional measurement of radiation produced by natural irradiation of granitic rocks was performed by the use of an imaging plate, which is a storage film coated with photostimulated phosphor (BaFBr:Eu2+). Radiation images of small volume specimens, such as thin sections were obtained with the imaging plate. Irradiation images of granitic rocks are inhomogeneous and the intensity of photostimulated luminescence per unit area, which is principally converted into the integrated dose, increases with the increasing potassium content in the rocks. The results of the present study indicate that the disintegration of 40K is the dominant radiation source of granitic rocks. The imaging plate is a new research tool for the evaluation of the natural radioactive properties of geological materials and is applicable as a semi-quantitative two-dimensional dosimeter for natural radioactivity.
Journal
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- GEOCHEMICAL JOURNAL
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GEOCHEMICAL JOURNAL 34 (1), 1-9, 2000
GEOCHEMICAL SOCIETY OF JAPAN
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Details
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- CRID
- 1390001204550051840
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- NII Article ID
- 130003904629
- 10008804629
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- NII Book ID
- AA00654975
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- COI
- 1:CAS:528:DC%2BD3cXitVemtbY%3D
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- ISSN
- 18805973
- 00167002
- http://id.crossref.org/issn/00167002
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- NDL BIB ID
- 5314158
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed