量研学術機関リポジトリ「QST-Repository」は、国立研究開発法人 量子科学技術研究開発機構に所属する職員等が生み出した学術成果（学会誌発表論文、学会発表、研究開発報告書、特許等）を集積しインターネット上で広く公開するサービスです。 Welcome to QST-Repository where we accumulates and discloses the academic research results(Journal Publications, Conference presentation, Research and Development Report, Patent, etc.) of the members of National Institutes for Quantum Science and Technology.
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We have been measured the recoil particles due to the proton irradiation in target material. CR-39 detectors were exposed in water column. CR-39 has no sensitivity for the incident proton (160 MeV), so that we can detect only the product of proton reaction in water and CR-39 itself. We have obtained the LET distribution at several depths in water. But it has the strong dependence of etching condition of CR-39. We will continue this work with AFM in order to reduce the ambiguity that caused by traditional optical microscopy.
陽子線照射による短飛程フラグメントの計測
