Refinment of calculation model for activation induced by medical particle beams

2014 Fiscal Year Final Research Report

• Project/Area Number: 23791419
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Radiation science
• Research Institution: Osaka University
• Principal Investigator: TAKASHINA Masaaki 大阪大学, 医学(系)研究科(研究院), 特任助教(常勤) (10392010)
• Project Period (FY): 2011-04-28 – 2015-03-31
• Keywords: 核反応モデル / 放射化 / 粒子線治療

Outline of Final Research Achievements

During particle therapy, radionuclides are produced in patient bodies and equipment. As the　nuclear　reaction　model,　QMD　(Quantum　Molecular　Dynamics)　has　been　frequently　used. On the other hand, AMD (Antisymmetrized Molecular Dynamics) has theoretical validity than QMD, although it is seldom adopted. In the present study, we investigate whether AMD can give accurate cross sections in particle simulation. As the result, we found that AMD gives comparable results with QMD in the most cases where experimental data exist. However, in the case of neutron production cross section of 12C+12C reaction, AMD is found to give better results. Therefore, we will make calculation database concentrating on neutron production cross section for light heavy-ions, which is necessary for neutron shield calculations.

Free Research Field

医学物理