Method and apparatus for producing radionuclide
A method for producing a radionuclide is provided that produces molybdenum trioxide 99 (Mo-99.O 3 ) and technetium oxide 99m (Tc-99m 2 .O 7 ) by emitting an electron beam accelerated by an electron linear accelerator to a molybdenum trioxide 100 (Mo-100.O 3 ) powder sample, and which separates and purifies technetium oxide 99m from both the molybdenum trioxide 99 and the technetium oxide 99m by using a radionuclide separation/purification unit. The method for producing a radionuclide supplies temperature-regulated gas to the molybdenum trioxide 100 powder sample during an irradiation period during which the electron beam is emitted to the molybdenum trioxide 100 powder sample.
1. A method for producing molybdenum trioxide 99 (Mo-99.O 3 ) and technetium oxide 99m (Tc-99m 2 .O 7 ), comprising:
emitting an electron beam accelerated by an electron linear accelerator to a molybdenum trioxide 100 (Mo-100.O 3 ) powder sample;
supplying a temperature-regulated gas to the molybdenum trioxide 100 powder sample during an irradiation period where the electron beam is emitted to the molybdenum trioxide 100 powder sample; and
vibrating the molybdenum trioxide 100 powder sample during the irradiation period.
2. The method according to claim 1 , further comprising:
separating and purifying the technetium oxide 99m from both the molybdenum trioxide 99 and the molybdenum trioxide 100.
3. The method according to claim 1 , wherein
the gas supplied to the molybdenum trioxide 100 powder sample during the irradiation period is a gas mixture of oxygen gas and a noble gas.
4. The method according to claim 1 , further comprising:
measuring a temperature of the molybdenum trioxide 100 Powder sample during the irradiation period;
regulating a temperature of the gas so that the temperature of the molybdenum trioxide 100 powder sample is adjusted to be greater than or equal to a boiling point of the technetium oxide 99m and less than or equal to a melting point of the molybdenum trioxide 100 during the irradiation period.
5. The method according to claim 1 , wherein
the vibrating is performed by an ultrasonic vibration device.
6. The method according to claim 1 , wherein
the vibrating is performed by stirring with a gas flow.
7. The method according to claim 2 , wherein
a first bellows-type pipe supplies the temperature-regulated gas to the molybdenum trioxide 100 powder sample, and a second bellows-type pipe supplies the molybdenum trioxide 99 and the technetium oxide 99m to the separation/purification unit for a separation/purification unit for separating and purifying the technetium oxide 99m.
8. The method according to claim 1 , wherein
a bellows-type container contains the molybdenum trioxide 100 powder sample during the irradiation period.
9. The method according to claim 1 , wherein
a first pipe supplies the temperature-regulated gas to the molybdenum trioxide 100 powder sample, and a second pipe supplies the molybdenum trioxide 99 and the technetium oxide 99m to a separation/purification unit for separating and purifying the technetium oxide 99m, and
a mesh filter having a mesh opening size smaller than a particle size of the molybdenum trioxide 100 powder sample, and which permits passage of the temperature-regulated gas is located between the first pipe and the molybdenum trioxide 100 powder sample and is located in the second pipe.
10. The method according to claim 1 , wherein
a thickness of the molybdenum trioxide 100 powder sample along an emission direction of the electron beam is greater than or equal to a beam path length of the electron beam in the molybdenum trioxide 100 powder sample.