Management of induced radioactivity in a PET cyclotron
Project/Area Number |
25861096
|
Research Category |
Grant-in-Aid for Young Scientists (B)
|
Allocation Type | Multi-year Fund |
Research Field |
Radiation science
|
Research Institution | Osaka University |
Principal Investigator |
HORITSUGI Genki 大阪大学, 医学(系)研究科(研究院), 特任研究員(常勤) (70646231)
|
Project Period (FY) |
2013-04-01 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
|
Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
|
Keywords | サイクロトロン / 中性子 / 放射化 / 放射化物 / thermal neutron flux / cyclotron / PET |
Outline of Final Research Achievements |
The purpose of this study was to measure the thermal neutron flux in the cyclotron room during producing positron emitters(C-11, N-13, O-15 and F-18)and to evaluate the activation level of the concrete in the cyclotron room. The gold foil activation method was used for measurement of the thermal neutron flux. As the result, the thermal neutron flux outside the self-shield during the production of F-18 was 4.67×10^2 /cm^2/s. Thermal neutron fluxes near target during C-11, N-13, O-15 and F-18 production were 3.76×10^6, 2.41×10^6, 2.29×10^6 and 3.18×10^6 /cm^2/s, respectively. Under normal operating conditions, thermal neutron flux during producing of F-18 was the highest. Thermal neutron fluxes during C-11, N-13 and O-15 production were sufficiently low as compared with that during F-18 production.
|
Report
(3 results)
Research Products
(1 results)