Jisho

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宇宙線核破砕
Wikipedia definition
1. Cosmic ray spallationCosmic ray spallation (also known as "spoliation") is a form of naturally occurring nuclear fission and nucleosynthesis. It refers to the formation of elements from the impact of cosmic rays on an object. Cosmic rays are highly energetic charged particles from outside of Earth ranging from protons, alpha particles, and nuclei of many heavier elements. About 1% of cosmic rays also consist of free electrons.
Read “Cosmic ray spallation” on English Wikipedia
Read “宇宙線による核破砕” on Japanese Wikipedia
Read “Cosmic ray spallation” on DBpedia

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