Development of a Microbeam Cell Irradiation System Using Micro Glass Tubes

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This study performed experiments and numerical simulations on MeV ion focusing by tapered glass capillaries and revealed at the first time that small-angle scattering of incident ions on the capillary inner wall is the predominant physical process of this focusing phenomena. Although the microbeams obtained by this focusing method consists of two components having different divergence angles, their qualities were found to be satisfactory for microbeam analyses such as a two-dimensional element mapping.