Abstract
The paper reports the recent progress of a high-energy, heavy ion nuclear microprobe facility established at the University of North Texas. The microprobe system is installed on a 3MV NEC 9SDH-2 Pelletron tandem accelerator. A high demagnification factor (∼60) has been achieved with the system, using a probe-forming lens system (from MARC, Melbourne, Australia) with the new Russian quadruplet configuration. The spatial resolution of 2–3 μm has been achieved for 4.0 MeV carbon ions or 9.0 MeV alpha particles with a beam current of ∼50–100 pA. Better spatial resolution (approaching one μm) is achievable when an extremely low beam current (100–2000 ions/sec) is used in the applications of IBICC and IBIL. Applications of the analytical techniques with the nuclear microprobe are outlined and discussed.
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