It is a major and complex task to accelerate an ion which has the same charge to mass ratio with strong contaminant ions, such as C in the O beam. An innovative method has been developed to suppress the contaminant ions in the Electron Cyclotron Resonance (ECR) ion source by introducing Li vapor. The ion distribution inside the ECR zone was obtained by the optical analysis of ions inside the ECR ion source. The C ions were suppressed as much as by a factor of 10, whereas the O beam changed little with the use of this technique.
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| http://dx.doi.org/10.1063/1.5000426 | DOI Listing |
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