Introduction Ion therapy allows a high precision, tumor conformal dose application but it is very sensitive to density changes along the beam path. Intra-fractional tumor motion due to respiration increases the risk of an incorrect irradiation and thus requires a reliable dosimetry as it was done by means of 3D in-beam PET for more than 400 patients at the experimental heavy ion treatment facil...

the price of single point diamond tools with a sharp tip is very high due to complex machining process and highly expensive machining equipments. yet, the performance is not quite satisfactory. in this paper, we have presented a very simple and cost effective machining process for the sharpening and polishing of diamond stylus using low energy reactive ion beam machining (ribm). in our method, ...

The recent development of Dual-BeamTM or Cross-BeamTM FIB systems has gradually taken over the traditional single beam FIB systems. A typical FIB column contains a liquid metal ion source that produces a finely focused Ga ion beam. The primary Ga ion beam is accelerated by 30-50 kV, and directed towards the features of interest on the specimen. The incident ion beam will sputter atoms from the ...