Patent Number: 
Section: claims

1. A method of producing actinium by using liquefied radium, the method comprising:a loading step of moving the liquefied radium from a vial to load the liquefied radium into a reaction space inside a chamber;a step of producing actinium through a nuclear reaction process by irradiating a particle beam to the liquefied radium in the reaction space inside the chamber; andan unloading step of moving a product comprising the liquefied radium and actinium to the vial,wherein, when the liquefied radium is loaded into the reaction space inside the chamber, a gas containing radon is moved to the vial through a first flow path connected to an upper side of the reaction space, and the moved gas is discharged from the vial through a second flow path. 2. The method of claim 1, further comprising step of separating actinium from the product. 3. The method of claim 2, further comprising a reloading step of transferring pure liquefied radium obtained by separating actinium from the product to the reaction space of the chamber. 4. The method of claim 2, further comprising condensing radon to discard radon. 5. The method of claim 2, further comprising diluting radon with external air to discharge the diluted radon. 6. The method of claim 2, wherein the loading step comprises moving a preset amount of radium to the reaction space. 7. The method of claim 6, wherein the loading step comprises moving the preset amount of radium to the reaction space by using a syringe pump. 8. The method of claim 2, wherein the unloading step comprises unloading the product by flowing in an inert gas into the reaction space of the chamber. 9. The method of claim 2, wherein the radium is liquefied by using an organic solution. 10. The method of claim 9, wherein the organic solution includes NO3 or Cl2. 11. The method of claim 2, further comprising a step of refining the separated actinium. 12. The method of claim 7, wherein the preset amount of radium from the syringe pump moves to the reaction space through a third flow path, and the product comprising the liquefied radium and actinium moves from the reaction space to the vial through a fourth flow path, both of the third flow path and the fourth flow path including a flow path connected to a lower side of the reaction space. 13. The method of claim 1, further comprising:a step of transferring the product along a third flow path from the vial to an actinium separating and refining unit. 14. The method of claim 1, wherein, while performing the unloading step, a gas within the vial is discharged along the second flow path coupled between the vial and a radon collection unit.