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刊物类别:Physics and Astronomy
刊物主题:Condensed Matter Physics Statistical Physics, Dynamical Systems and Complexity Atomic, Molecular, Optical and Plasma Physics Applied and Technical Physics Theoretical, Mathematical and Computational Physics
出版者:Springer Berlin / Heidelberg
ISSN:2190-5444
文摘
Ion beams supplied by the 3MV Tandem accelerator of LABEC laboratory (INFN-Firenze), have been used to study the feasibility of irradiating materials with ion fluences reproducible to about 1%. Test measurements have been made with 7.5 MeV 7Li2+ beams of different intensities. The fluence control is based on counting ions contained in short bursts generated by chopping the continuous beam with an electrostatic deflector followed by a couple of adjustable slits. Ions are counted by means of a micro-channel plate (MCP) detecting the electrons emitted from a thin layer of Al inserted along the beam path in between the pulse defining slits and the target. Calibration of the MCP electron detector is obtained by comparison with the response of a Si detector.