An Analytical Expression for the Electric Field and Particle Tracing in Modelling of Be Erosion Experiments at the JET ITER-like Wall

I. Borodkina, D. Borodin, A. Kirschner, I. V. Tsvetkov, V. A. Kurnaev, M. Komm, R. Dejarnac, Contributors JET Contributors

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

A new analytical approximation for the electric potential profile in the presence of an oblique magnetic field and the analytical solution for the particle motion just before the impact with a plasma-facing surface are presented. These approximations are in good agreement with fluid solutions and the corresponding PIC simulations. These expressions were applied to provide effective physical erosion yields for Be, which have in a second step been used in ERO code simulations of spectroscopy at Be limiters of the JET ITER-like wall. These new analytical expressions lead to an increase of the effective physical sputtering yields of Be by deuteron impact up to 30% in comparison with earlier pure numerical simulations.

Original languageEnglish
Pages (from-to)640-645
Number of pages6
JournalContributions to Plasma Physics
Volume56
Issue number6-8
DOIs
StatePublished - 1 Aug 2016
Externally publishedYes

Bibliographical note

Publisher Copyright:
Copyright © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

  • ERO code
  • JET, ITER-like wall
  • Plasma-surface interaction
  • beryllium, erosion
  • electric field
  • magnetic pre-sheath
  • oblique magnetic field
  • sputtering
  • the Debye sheath

Fingerprint

Dive into the research topics of 'An Analytical Expression for the Electric Field and Particle Tracing in Modelling of Be Erosion Experiments at the JET ITER-like Wall'. Together they form a unique fingerprint.

Cite this