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Spot F positron source electro-deposited on a graphite rod |
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| Authors: | Fuminori Saito Yasuyuki Nagashima Toshikazu Kurihara Ichiro Fujiwara Ren Iwata Naoki Suzuki Yoshiko Itoh Akira Goto Toshio Hyodo |
| Affiliation: | a Cyclotron Center, RIKEN Institute of Physical and Chemical Research. Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan b Department of Basic Sciences, Graduate School of Arts and Science, University of Tokyo 3-8-1 Komaba, Tokyo 153-8902, Japan c Institute of Materials Structure Science(IMMS), High Energy Accelerator Research Organization (KEK) Oho, Tsukuba, Ibaraki 305-0801, Japan d Department of Economics, Otemon-gakuin University Nishiai-2-1-15, Ibaraki-shi, Osaka, 567-8502, Japan e Cyclotron Radio-isotope Center, Tohoku University Aramaki, Aoba-ku, Sendai-shi 980-0845, Japan |
| Abstract: | 2.2 GBq of 18F (half-life 110 min) was effectively deposited on a graphite electrode of diameter 3 or 5 mm. The fraction of the electro-deposited 18F was as high as 97% of the total 18F produced in the solution. The fraction of the positrons emitted out of the electrode was 44% of the total β+. Thus, as much as 36% of the β+ from the produced 18F is available for the source of slow positron beams. |
| Keywords: | 18F positron source Electro-deposition Graphite rod Spin-polarized positron beam Positron annihilation |
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