| 摘要 |
PROBLEM TO BE SOLVED: To shorten time necessary for recovering produced radioactive isotopes. SOLUTION: In a reaction tank 10, LiOH solution 8 containing 6Li is charged. Neutrons radiated from a neutron source 1 in a neutron source protection cover 29 is cast in the LiOH solution 8. The neutrons are made to thermal neutron by water included in the LiOH solution 8. The thermal neutrons react with 6Li contained in the LiOH solution 8 to discharge 3H. The 3H reacts with 16O contained in water molecule in the LiOH solution 8, and as a result, 18F as a radioactive isotope is produced. 18F is used as an index of a radioactive chemical. Only by supplying a recovery purification device 50 with the LiOH solution 8, the 18F as a radioactive isotope is conveyed from the reaction tank 10 being a reaction part to the recovery purification device 50 easily and in a short time.
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