The Natural Reactor and Comochemistry.

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概要

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• A brief historical review of the studies on the natural reactor and the occurrence of 244Pu in the early solar system is presented. Results from recent studies on the occurrence of 'excess' heavy isotopes of xenon in carbonaceous chondrites and lunar fines reveal that they formed when the ratio of 244Pu to 238U in the early soalr system was in the range of 0.0153 to 0.262 (atom/atom). While the carbonaceous chondrites seem to have all formed from a parent body (4, 890±8) to (4, 908±8) million years ago, ages of lunar fines varied from (4, 649±7) to (4, 992±8) million years.

• 日本保健物理学会の論文

著者

• 黒田 和夫

  アーカレソー大学

関連論文

• The Natural Reactor and Comochemistry.

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