Compositions of high specific activity sn-117m and methods...

G - Physics – 21 – G

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G21G 1/10 (2006.01)

Patent

CA 2752817

Compositions of high specific activity 117m Sn with specific activity of greater than 100 Ci/g Sn and methods of producing the same. The method includes exposing 116Cd in a target layer (12) to an .alpha.-particle beam (16) of sufficient incident kinetic energy and duration to convert a portion of the 116Cd to 117m- Sn to form an irradiated material. The irradiated material in the target layer (12) is dissolved to form an intermediate solution containing 117m Sn and 116Cd. The 117m Sn is separated from the 116Cd to yield high specific activity 117m Sn.

La présente invention a trait à des compositions de 117mSn à activité spécifique élevée présentant une activité spécifique supérieure à 100 Ci/g Sn et à leurs procédés de préparation. Le procédé inclut une étape consistant à exposer 116Cd dans une couche cible (12) à un faisceau de particules a (16) ayant une énergie cinétique incidente et une durée suffisantes pour convertir une partie de 116Cd en 117mSn en vue de former une substance irradiée. La substance irradiée dans la couche cible (12) est dissoute afin de former une solution intermédiaire contenant 117mSn et 116Cd. 117mSn est séparé de 116Cd afin de produire du 117mSn à activité spécifique élevée.

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