Dosimetry and Measured Differential W Values of Air for Heavy Ions
作者： Tatsuaki Kanai , Toshiyuki Kohno , Shinichi Minohara , Michio Sudou , Eiichi Takada
DOI: 10.2307/3578867
关键词: Electron 、 Irradiation 、 Ion 、 Dosimetry 、 Helium 、 Ionization chamber 、 Cyclotron 、 Radiochemistry 、 Particle accelerator 、 Atomic physics 、 Chemistry
摘要: Heavy-ion irradiation systems were designed and constructed at two cyclotron facilities in Japan for use various fields of radiation physics biology. A 135 MeV/u carbon beam as well 12 helium-3 beams first used experiments. We have established a systematic method heavy-ion dosimetry both high low incident energies involving measurements fluences. also obtained differential W values (w) air those by comparing the results fluence measurement with ionization chamber dosimetry. The found to be 36.2 +/- 1.0, 34.5 33.7 0.9 eV 6.7 ions, 10.3 3He 129.4 respectively. w value high-energy heavy ions approaches electron or photon beams. In beam, we track-size effect. difference track sizes gas solid phases affected output current ion case ions.
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