Determination of initial states of captured muons for light elements

2013 Fiscal Year Final Research Report

• Project/Area Number: 24740279
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Atomic/Molecular/Quantum electronics
• Research Institution: Osaka University
• Principal Investigator: NINOMIYA KAZUHIKO 大阪大学, 理学(系)研究科(研究院), 助教 (90512905)
• Project Period (FY): 2012-04-01 – 2014-03-31
• Keywords: ミュオン / ミュオン原子 / 量子ビーム / ミュオン捕獲過程 / ミュオン特性Ｘ線 / エキゾチック原子 / Ｊ－ＰＡＲＣ

Research Abstract

In this study, muon irradiations for low-pressure gaseous samples (CO, CO2 and COS) have been performed at the muon science facility (MUSE) in J-PARC. The muon capture probabilities for C and O atoms and the initial quantum level (principle and angular momentum quantum numbers) of captured muons were quantitatively investigated for these molecules. From this work, we found that the muon capture probability for C atom in CO molecule was clearly higher than that in CO2 and COS molecules. We also found that the initial quantum level of muon captured in C atom for CO molecule was different from that for CO2 and COS molecules. We concluded that the difference in muon capture process in C atom among these molecules are caused by lone-pair electrons at C atom in CO molecule, and we firstly investigated the initial quantum levels of captured muon by lone-pair electrons at C atom quantitatively.

Research Products

• [Journal Article] A new X-ray fluorescence spectroscopy for extraterrestrial materials using a muon beam (2014)
  • Author(s): K. Terada, K. Ninomiya, T. Osawa, S. Tachibana, Y. Miyake, M. K. Kubo, N. Kawamura, W. Higemoto, A. Tsuchiyama, M. Ebihara, M. Uesugi
  • Journal Title: SCIENTIFIC REPORTS Volume: 4 Pages: 5072
  • DOI: 10.1038/srep05072
  • Peer Reviewed
• [Journal Article] ミュオン原子から放出されるミュオン特性X線を用いた非破壊元素分析 (2014)
  • Author(s): 二宮和彦
  • Journal Title: 放射化学 Volume: 第29号 Pages: 9-14
  • Peer Reviewed
• [Presentation] 低圧気体サンプル(CO,CO_2,COS)を対象としたミュオン原子形成時の化学的環境の影響に関する研究 (2013)
  • Author(s): 吉田剛、二宮和彦、稲垣誠、伊藤孝、髭本亘、長友傑、ストラッサー・パトリック、河村成肇、下村浩一郎、三宅康博、三浦太一、久保謙哉、篠原厚
  • Organizer: 原子衝突学会第38回年会
  • Place of Presentation: 理化学研究所(和光)
  • Year and Date: 20131116-17
• [Presentation] Simultaneous and Multielemental Analysis by Muonic X-rays for Inside Japanese Bronze and Gold Coins (2013)
  • Author(s): K. Ninomiya, M. K. Kubo, T. Nagatomo, G. Yoshida, M. Inagaki, A. Shinohara, T. Suzuki, N. Kawamura, P. Strasser, K. Shimomura, Y. Miyake, Y. Kobayashi, W. Higemoto, S. Sakamoto, T. Saito
  • Organizer: APSORC'13 - 5th Asia-Pacific Symposium on Radiochemistry
  • Place of Presentation: Kanazawa, Japan
  • Year and Date: 20130922-27
• [Presentation] Study on muon capture process for gaseous molecules containing C and O atoms (2013)
  • Author(s): G. Yoshida, K. Ninomiya, A. Shinohara, T.U. Ito, W. Higemoto, T. Nagatomo, P. Strasser, N. Kawamura, K. Shimomura, Y. Miyake, T. Miura, M. K. Kubo
  • Organizer: APSORC'13 - 5th Asia-Pacific Symposium on Radiochemistry
  • Place of Presentation: Kanazawa, Japan
  • Year and Date: 20130922-27
• [Presentation] Muonic Atom Formation by the Muon Transfer Process in C_6H_6 / C_6H_<12> + CCl_4 Mixtures (2013)
  • Author(s): M. Inagaki, K. Fujihara, G. Yoshida, K. Ninomiya, Y. Kasamatsu, M. K. Kubo, W. Higemoto, N. Kawamura, T. Nagatomo, Y. Miyake, T. Miura, A. Shinohara
  • Organizer: APSORC'13 - 5th Asia-Pacific Symposium on Radiochemistry
  • Place of Presentation: Kanazawa, Japan
  • Year and Date: 20130922-27
• [Presentation] 酸化窒素分子を対象としたミュオン特性X線構造の測定 (2013)
  • Author(s): 二宮和彦、吉田剛、篠原厚、伊藤孝、髭本亘、長友傑、ストラッサー・パトリック、河村成肇、下村浩一郎、三宅康博、三浦太一、久保謙哉
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学
  • Year and Date: 20130326-29
• [Presentation] 負ミュオン特性X線を用いた非破壊多元素同時分析 (2013)
  • Author(s): 二宮和彦
  • Organizer: 第52回放射線科学研究会
  • Place of Presentation: 大阪
  • Year and Date: 2013-10-25
• [Presentation] 低圧のCO,CO_2,COSを試料に用いたミュオン原子形成過程の研究 (2012)
  • Author(s): 吉田剛、二宮和彦、篠原厚、伊藤孝、髭本亘、長友傑、ストラッサー・パトリック、河村成肇、下村浩一郎、三宅康博、三浦太一、久保謙哉
  • Organizer: 第56回放射化学討論会
  • Place of Presentation: 東京工業大学
  • Year and Date: 20121003-05
• [Presentation] ミュオンエックス線測定による青銅鏡の元素成分比の定量 (2012)
  • Author(s): 二宮和彦、小林義男、ストラッサー・パトリック、石田勝彦、松崎禎市郎、久保謙哉、齋藤努
  • Organizer: 第56回放射化学討論会
  • Place of Presentation: 東京工業大学
  • Year and Date: 20121003-05
• [Presentation] 負ミュオンを用いた三次元非破壊多元素同時元素分析 (2012)
  • Author(s): 二宮和彦、長友傑、小林義男、鈴木栄男、河村成肇、ストラッサー・パトリック、下村浩一郎、三宅康博、髭本亘、坂元眞一、篠原厚、久保謙哉、齋藤努
  • Organizer: 第56回放射化学討論会
  • Place of Presentation: 東京工業大学
  • Year and Date: 20121003-05
• [Presentation] Non-destructive and quantitative multi-elemental analysis by muonic X-ray spectroscopy for archeological bronze samples (2012)
  • Author(s): K. Ninomiya, T. Nagatomo, Y. Kobayashi, T. Suzuki, N. Kawamura, P. Strasser, K. Shimomura, Y. Miyake, W. Higemoto, S. Sakamoto, K. Ishida, T. Matsuzaki, A. Shinohara, K. Kubo, T. Saito
  • Organizer: 8th International Conference on Nuclear and Radiochemistry
  • Place of Presentation: Como, Italy
  • Year and Date: 20120916-21