A compact ECR ion source using a 2.45 GHz solid-state microwave generator carbon ion beam

Full text: At the Institute of Space-Earth Environmental Research, Nagoya University, A compact electron cyclotron resonance (ECR) ion source using a 2.45 GHz solid-state microwave generator for generating carbon ion beam has been developed on a trial basis. The plasma chamber volume is about 40 ml, and the 2.45 GHz microwave is introduced to the plasma chamber from a solid-state microwave generator with a maximum output of 200 W through small antennas with coaxial cables giving transverse-electromagnetic mode of transmission. The compact ECR is installed to a beam injection system; an Einzel lens, XY steer and injection faraday cup, 90°dipole magnet, which were made by modifying a part of the HVEE ¹⁴C AMS and General Ionex AMS system. A series of experiments and simulations for optimization of carbon isotope measurement will be discussed toward the practical use of stable carbon isotope and radiocarbon analyses.