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  • Title: Enhanced confinement in electron cyclotron resonance ion source plasma.
    Author: Schachter L, Stiebing KE, Dobrescu S.
    Journal: Rev Sci Instrum; 2010 Feb; 81(2):02A330. PubMed ID: 20192351.
    Abstract:
    Power loss by plasma-wall interactions may become a limitation for the performance of ECR and fusion plasma devices. Based on our research to optimize the performance of electron cyclotron resonance ion source (ECRIS) devices by the use of metal-dielectric (MD) structures, the development of the method presented here, allows to significantly improve the confinement of plasma electrons and hence to reduce losses. Dedicated measurements were performed at the Frankfurt 14 GHz ECRIS using argon and helium as working gas and high temperature resistive material for the MD structures. The analyzed charge state distributions and bremsstrahlung radiation spectra (corrected for background) also clearly verify the anticipated increase in the plasma-electron density and hence demonstrate the advantage by the MD-method.
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