METHOD FOR OBTAINING AN I-123 RADIOISOTOPE Russian patent published in 2021 - IPC G21G1/10 

FIELD: radiation.

SUBSTANCE: invention relates to a method for obtaining a ¹²³I radioisotope by the reaction ¹²⁴Xe(p,2n)¹²³Cs→¹²³Xe→¹²³I and(or) by the reaction ¹²⁴Xe(p,pn)¹²³Xe→¹²³I. The method includes irradiation with protons of a target with a ¹²⁴Xe isotope, extraction of the starting ¹²⁴Xe with the accumulated ¹²³Xe from the target after irradiation, exposure of ¹²³Xe for decay thereof into ¹²³I. Hydrogen is therein added to the target with the ¹²⁴Xe isotope, a gas mixture of the ¹²⁴Xe isotope and hydrogen is irradiated with protons, ¹²³I is additionally extracted from the target after irradiation as part of hydrogen iodide H¹²³I by one of the known approaches.

EFFECT: significant (by 2 to 3 times) increase in the technological yield of ¹²³I without change in the primary operating conditions and increase in the temporary load of the cyclotron due to the additional, compared to the prototype, extraction of ¹²³I formed in the target during irradiation as a result of the decay of ¹²³Xe from the target.

3 cl, 1 dwg