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Micro-PIXE for the study of atmospheric environment

大気環境研究のためのマイクロPIXE

笠原 三紀夫*; Ma, C.-J.*; 奥村 智憲*; 小嶋 拓治; 箱田 照幸; 田口 光正; 酒井 卓郎; 小原 祥裕

Kasahara, Mikio*; Ma, C.-J.*; Okumura, Motonori*; Kojima, Takuji; Hakoda, Teruyuki; Taguchi, Mitsumasa; Sakai, Takuro; Ohara, Yoshihiro

雲の特性を明らかにするために、神石の鉄-銅鉱山にある巨大垂直坑道を用いて人工雲の発生実験を行った。この個々の雲粒子の物理的化学的特徴を、京都大学における顕微分析とTIARA施設におけるマイクロPIXE分析を用いて調べた。雲粒子のサイズ, その分布, 粒子個数濃度、及び粒子中の塩素の分布状態変化の粒子サイズ依存性にかかわる実験結果から、雲の成長過程を明らかにした。

Artificial cloud generation experiment was performed using a huge vertical pit located in Kamaishi iron-copper mine to investigate the characteristics of cloud. The physical and chemical properties of individual cloud droplets were examined by microscopic analysis at Kyoto university and micro-PIXE analysis at TIARA. The process of growth of cloud was clarified based on the result on droplet size, its distribution, droplet number concentration, and the change in distribution of chlorine in droplet as the function of size.

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