Carbon ion stripper for NSTRI tandem accelerator

C are 1.52, 1.09, and 0.76. These variations highlight the importance of considering isotopic mass effect on stripping efficiency in AMS-based radiocarbon measurements. The optimized geometry of the stripper section was constructed and experimentally tested. Pressure measurements taken in different regions showed excellent agreement with the gas-flow simulation results, validating the accuracy of the simulation. Furthermore, the calculated carbon charge-state fractions were validated with experimental measurements from another reference at 1.7 MeV in nitrogen under equilibrium-thickness conditions. The results reveal a close match between the calculated fractions in this study and the experimental data, further supporting the reliability of the model and the credibility of the results. The results demonstrate that this optimized geometry and structure are capable of achieving the required atomic density for reaching the equilibrium thickness of the carbon beam, while the overall length is reduced to approximately one-third of that in conventional stripper designs.