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Quantitative Single-Ion Irradiation by ASIPP Microbeam

机译：ASIPP微束定量单离子辐照

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摘要

A single-ion microbeam facility has been constructed by the microbeam research group in ASIPP (Institute of Plasma Physics, Chinese Academy of Science). The system was designed to deliver defined numbers of hydrogen ions produced by a van de Graaff accelerator, covering an energy range from 200 keV to 3 MeV, into living cells (5 μm –20 μm diameter) growing in culture on thin plastic films. The beam is collimated by a 1-μm inner diameter HPLC (high performance liquid chromatography) capillary, which forms the micron-dimensional beam-line exit. A microbeam collimator, a scintillation ion counting system and a fast beam shutter, which constitute a precise dosage measuring and controlling system, jointly perform quantitative single-ion irradiation. With this facility, we can presently acquire ion-hitting efficiency close to 95%.
机译：ASIPP（中国科学院等离子体物理研究所）的微束研究小组已经建造了一个单离子微束设备。该系统旨在将范德格拉夫加速器产生的定义数量的氢离子（覆盖范围从200 keV到3 MeV的能量）输送到在塑料薄膜上培养的活细胞（直径5μm– 20μm）中。光束通过1微米内径HPLC（高效液相色谱）毛细管进行准直，该毛细管形成微米级的光束线出口。构成精确剂量测量和控制系统的微束准直仪，闪烁离子计数系统和快速光束快门共同执行定量单离子辐照。有了这个设施，我们目前可以获得接近95％的离子击中效率。

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