Abstract
Resonance surfaces for a 2.45 GHz electron cyclotron resonance ion source are investigated. In addition to the typical flat-B and minimum-B profiles, we have investigated on two new magnetic field structures, namely the torus zone and the double zone configurations. The impacts of such surfaces on the microwave power absorption are discussed. Furthermore, the uniformity of the ion emissive surfaces in connection with the resonance surfaces is examined. Different configurations for absorbing microwave power and simultaneously for producing uniform ion density distribution near the extraction wall of the source are discussed.
Highlights
The generation of intense beams of highly charged ions has been facilitated by development of the electron cyclotron resonance ion sources (ECRISs) [1,2]
We have considered four magnetic field configurations and investigated some of the main concepts of the ECR plasma
The resonance surfaces and their impacts on the microwave power absorption and the plasma density distribution have been addressed in detail
Summary
The generation of intense beams of highly charged ions has been facilitated by development of the electron cyclotron resonance ion sources (ECRISs) [1,2]. In 2015, Mascali et al provided a numerical solution of the Vlasov equation via kinetic codes coupled to the finite element (FE) solvers, based on a PIC strategy to simulate ECRIS [11] They presented some results about wave-plasma interaction and electron-ion confinement. We have attempted to systematically study some of the main concepts of an ECR plasma using simulations based on the FE method To this end, 3D geometries of the resonance surfaces for different magnetic field configurations are illustrated and discussed. The simulation and experimental results presented in these works, are restricted to the flat-B profile and the simple mirror configurations with various mirror ratios In these works, no investigation was performed on the 3D structure of the resonance surfaces associated with the considered configurations and their effects on the ion density distribution. It is reasonable to assume that the electron energy distribution function has a very little deviation from the Maxwell-Boltzmann distribution
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
