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Development on non-destructive muonic X-ray analysis of carbonaceous chondrites; Feasibility test for returned samples from C-type asteroids

炭素質コンドライトの非破壊ミュオン特性X線分析の開発; Cタイプ小惑星試料への適用を目指して

寺田 健太郎*; 佐藤 朗*; 二宮 和彦*; 川島 祥孝*; 下村 浩一郎*; 友野 大*; 河井 洋輔*; 大澤 崇人  ; 橘 省吾*

Terada, Kentaro*; Sato, Akira*; Ninomiya, Kazuhiko*; Kawashima, Yoshitaka*; Shimomura, Koichiro*; Tomono, Dai*; Kawai, Yosuke*; Osawa, Takahito; Tachibana, Shogo*

ミュオンを用いた元素分析法であるミュオン捕獲特性X線分析は、試料を非破壊で分析できる優れた手法であり、はやぶさ2やOSIRIS-RExなどの小惑星サンプルリターン試料への適用が期待できる。そこでC型小惑星に近似していると考えられる炭素質コンドライトを用いて、本手法の有効性を検証した。

In recent years, analysis of characteristic X-rays from muonic atoms, in which a muon is captured, has attracted attention because both a muon beam and a muon-induced characteristic X-ray have high transmission abilities, of which energies are about 200 times higher. From these features, a muonic X-ray analysis has great advantages in several ways. At the conference, we will report on our recent progress of muonic X-ray analysis and discuss on a future prospect for applications for Earth and planetary science.

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