Transmission of 200 keV H+2 Ions through Tapered Capillaries in PC

The transmission of 200 keV H+2 ions through tapered capillaries with inlet/outlet diameters of 4 μm/2 μm and a length of 30 μm is reported. The results indicate that 200 keV H+2 ions can be guided through foils tilted up to ±12.5°. The areal density of the transmitted ion beam is estimated to be ~3.7 times larger than that of incident beam.