[2A10-14] Medical Applications

[2A10] Feasibility study on a medical radioisotope Mo-99/Tc-99m production using He beam

2. Measurement of radioisotope productions and the excitation functions on zirconium induced by helium

*Masayuki Hagiwara¹, Hiroshi Yashima², Toshiya Sanami¹, Shunsuke Yonai³ (1. High energy accelerator research organization (KEK), 2. Kyoto university, 3. National Institutes for Quantum and Radiological Science and Technology (QST) )

Keywords:Medical Radioisotopes, Accelerator, RI production

^99mTc/⁹⁹Mo is one of the most important radioisotopes used in nuclear medicine for common diagnostic imaging technologies such as single photon emission computed tomography (SPECT). After the worldwide shortage of ^99mTc/⁹⁹Mo due to the long shutdowns of major nuclear research reactors in 2009-2010, some alternate sources of ^99mTc/⁹⁹Mo using accelerators have been investigated for stable supply of ^99mTc/⁹⁹Mo. In this study, we focused on the production route of ⁹⁹Mo via the ⁹⁶Zr(α,n)⁹⁹Mo reaction using a low energy accelerator. In order to estimate the production yield of ⁹⁹Mo and the byproduct radioisotopes, we irradiated 24.6 and 46.4 MeV alpha particles onto stacked ^natZr targets at a cyclotron facility (NIRS-930), National Institutes for Quantum and Radiological Science and Technology, Japan.In this workshop, we will present these experimental data, in comparison with other experimental data and calculations.