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TY - UNPB AU - Peng, S.X. AU - Chen, J.E. AU - Guo, Z.Y. AU - Ren, H.T. AU - Wen, J.M. AU - Wu, W.B. AU - Xu, Y. AU - Zhang, A.L. AU - Zhang, J.F. AU - Zhang, T. ED - Schaa, Volker RW TI - Preliminary Design of a Hybrid Ion Source for 7Li+3 Generation J2 - Proc. of ECRIS2016, Busan, Korea, August 28 - September 1, 2016 C1 - Busan, Korea T2 - International Workshop on ECR Ion Sources T3 - 22 LA - english AB - To provide a novel directional fast-neutron via the p(7Li ,n) reaction for prompt fission γ -ray (PFG) spectra study, a hybrid 7Li³⁺ ion source was designed at Peking University(PKU). It is a combination of a 6.5 GHz ECR (electron cyclotron resonance) ion source and a hot surface ionization source. The surface ionization source locates inside the ECR chamber and a 500 V bias voltage is set between the hot surface and the ECR chamber. Lithium vapor from an oven is guided into the surface source through a heating transfer pipe. Li⁺ ions generated on the hot surface will be extracted from the surface source and striped into Li³⁺ with the electron impact ionization. To avoid the lithium vapor attaching on the wall of the discharge chamber, the whole plasma chamber will be heated up to 300 °C. A four-electrode extraction system will be used for Li³⁺ ion beam formation. Details will be presented in the paper. PB - JACoW CP - Geneva, Switzerland ER -