Tracing of behavior of radioactive aerosol produced in high-energyaccelerator facility and elucidation of its formation mechanism

• Project/Area Number: 23656589
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nuclear engineering
• Research Institution: Kyoto University
• Principal Investigator: SHIBATA Seiichi 京都大学, 原子炉実験所, 教授 (80110708)
• Co-Investigator(Kenkyū-buntansha): SEKIMOTO Shun 京都大学, 原子炉実験所, 助教 (10420407)
• Project Period (FY): 2011 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
• Keywords: 放射性エアロゾル / 放射線工学 / ビーム科学

Research Abstract

The radioactive aerosol was produced by irradiation of the inconeltarget with 120-GeV protons in the anti-proton target station at Fermi National Accelerator Laboratory . Consequently, it was found that the particle-size of the radioactive aerosol was proportional to the half-life of the produced radioactivity containedin the radioactive aerosol. The formation mechanism was studied based on the result obtained.

Research Products

• [Presentation] Measurement of radionuclides in radioactive aerosols produced in a 120-GeV proton target station (2012)
  • Author(s): S. Sekimoto, H. Yashima, S. Fukutani, S. Shibata, H. Matsumura, A. Toyoda, K. Oishi, N. Matsuda, Y. Kasugai, Y. Sakamoto, H. Nakashima, T. Nakamura, D. Boehnlein, G. Lauten, A. Leveling, N. Mokhov and K. Vaziri
  • Organizer: 13th International Congress of the International Radiation Protection Association (IRPA 13)
  • Place of Presentation: Glasgow, UK
  • Year and Date: 2012-05-16
• [Presentation] Correlation between the particle size distribution of radioactive aerosols and their half-lives derived from measurement of radioactive aerosols at a 120-GeV proton target station (2011)
  • Author(s): S. Sekimoto, H. Yashima, N. Osada, Y. Oki, S. Shibata, H. Matsumura, A. Toyoda, K. Oishi, N. Matsuda, Y. Kasugai, Y. Sakamoto, H. Nakashima, D. Boehnlein, G. Lauten, A. Leveling, N. Mokhov and K. Vaziri
  • Organizer: 3rd International Nuclear Chemistry Congress (3rd-INCC)
  • Place of Presentation: Sicily, Italy
  • Year and Date: 2011-09-20
• [Presentation] 放射性エアロゾルに含まれる放射性核種の半減期を利用したエアロゾルの生成機構の検討 (2011)
  • Author(s): 長田直之、関本俊、沖雄一、柴田誠一
  • Organizer: 第12回環境放射能研究会
  • Place of Presentation: 高エネルギー加速器研究機構
  • Year and Date: 2011-03-09
• [Presentation] Correlation between the particle size distribution of radioactive aerosols and their half-lives derived from measurement of radioactive aerosols at a 120-GeV proton target station (2011)
  • Author(s): Shun Sekimoto
  • Organizer: 3rd International Nuclear Chemistry Congress
  • Place of Presentation: Palermo, Italy