How to produce high specific activity tin-117 m using alpha particle beam

C. Duchemin (1) , M. Essayan (1) , Arnaud Guertin (1) , Ferid Haddad (1, 2) , Nathalie Michel (1, 2) , Vincent Métivier (1)

1 SUBATECH - Laboratoire de physique subatomique et des technologies associées
2 Institut de Recherche Public - ARRONAX - (GIP) Groupement d'Intérêt Public [Saint-Herblain]

Tin-117m is an interesting radionuclide for both diagnosis and therapy, thanks to the gamma-ray and electron emissions, respectively, resulting from its decay to tin-117g. The high specific activity of tin-117 m is required in many medical applications, and it can be obtained using a high energy alpha particle beam and a cadmium target. The experiments performed at the ARRONAX cyclotron (Nantes, France) using an alpha particle beam delivered at 67.4 MeV provide a measurement of the excitation function of the Cd-nat(α,x)Sn-117 m reaction and the produced contaminants. The Cd-116(α,3n)Sn-117m production cross section has been deduced from these experimental results using natural cadmium. Both production yield and specific activity as a function of the projectile energy have been calculated. These informations help to optimize the irradiation conditions to produce tin-117 m with the required specific activity using α particles with a cadmium target.

Domaines: Physique des Hautes Energies - Expérience [hep-ex]

C. Duchemin, M. Essayan, Arnaud Guertin, Ferid Haddad, Nathalie Michel, et al.. How to produce high specific activity tin-117 m using alpha particle beam. Applied Radiation and Isotopes, 2016, 115, pp.113-124. ⟨10.1016/j.apradiso.2016.06.016⟩. ⟨hal-02912142⟩