Thermoluminescence study of ordinary chondrites by TL spatial distribution readout system
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概要
- 論文の詳細を見る
The thermoluminescence (TL) image reading technique by the TL spatial distribution readout system is improved 1) to obtain a quantitative glow curve in any part of the TL image, 2) to get fine structure of a TL image and 3) to heat a sample to a higher temperature. This technique is applied to measure the natural and artificial TL glow curves of chondrules in ordinary chondrites, ALH-77294 (H5) and ALH-77216 (L3.8). The fluctuation in the natural LT/HT (region) ratios (LT(region); photons counted in a low temperature region, HT (region); in a high temperature region) of the equilibrated chondrite ALH-77294 is small though that in the unequilibrated chondrite ALH-77216 is large. The equivalent doses of ALH-77294 and ALH-77216 can be estimated from the correlation between natural LT (region) and artificial LT (region) to be about 240krad and 16krad respectively, and are consistent with isotopic ages.
- 国立極地研究所の論文
著者
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YAMAMOTO Isao
Department of Neurosurgery, Yokohama City University School of Medicine
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Nishimura Hiroshi
Department of Cardiovascular Medicine, Tokyo Graduate School of Medicine
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NINAGAWA KIYOTAKA
Department of Applied Physics, Okayama University of Science
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Yamamoto Isao
Department Of Electronic Engineering Faculty Of Engineering Okayama University Of Science
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Ninagawa Kiyotaka
Department Of Applied Physics Okayama University Of Science
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Ninagawa Kiyotaka
Department Of Applied Physics Faculty Of Science Okayama University Of Science
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Wada Tomonori
Department Of Physics Faculty Of Science Okayama University
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Matsunami Satoshi
Department of Earth Sciences, Miyagi University of Education
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Ninagawa K
Okayama Univ. Sci. Okayama Jpn
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Matsunami Satoshi
Department Of Earth Sciences Miyagi University Of Education
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Nishimura Hiroshi
Department Of Geosciences Faculty Of Science Naruto University Of Education
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Nishimura Hiroshi
Department Of Cardiovascular Medicine Tokyo Graduate School Of Medicine
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Nishimura Hiroshi
Department Of Applied Chemistry Faculty Of Engineering Osaka Institute Of Technology
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