@misc{oai:repo.qst.go.jp:00066984,
 author = {Nagatsu, Kotaro and Suzuki, Hisashi and Suzuki, Atsushi and Minegishi, Katsuyuki and Matsumoto, Mikio and Shiina, Takuya and Arai, Kasumi and Akabori, Shogo and Higashi, Tatsuya and Zhang, Ming-Rong and 永津 弘太郎 and 鈴木 寿 and 鈴木 篤史 and 峯岸 克行 and 椎名 卓也 and 新井 香純 and 赤堀 省吾 and 東 達也 and 張 明栄},
 month = {Nov},
 note = {[Aim] We evaluated the production feasibility of Ac-225 (T1/2 = 10 d, decay to Bi-209 via 4α+2β) by using Ra-226 target coupled with our vertical irradiation system.
[Method] Radium targets of 100–500 μCi (nearly equal to the unit of μg) added with carrier calcium were prepared as carbonate by precipitation on a silicon carbide filter. Irradiations were performed with 18 MeV protons at 3 μA for 3 h. The Ac-225 product, purified by the following filtration, radio-colloid formation, reconstitution, and column separation, was obtained in a dried form.
[Results and Discussion] Production yields of Ac-225 strongly depend on the amount of Ra-226 prepared, where the produced activity of Ac-225 was roughly estimated to be about 1/100 of the Ra-226 activity by the above irradiation condition (9 μAh); e.g., approximately 5 μCi of Ac-225 can be obtained from a 500 μCi of radium target., 第58回日本核医学会学術総会},
 title = {Feasibility study for the production of Ac-225 from Ra-226 target / ラジウム226を利用したアクチニウム225の製造可能性評価},
 year = {2018}
}