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

doi:10.1002/ctpp.201610032

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 journal › Article › peer-review

33 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 language	English
Pages (from-to)	640-645
Number of pages	6
Journal	Contributions to Plasma Physics
Volume	56
Issue number	6-8
DOIs	https://doi.org/10.1002/ctpp.201610032
State	Published - 1 Aug 2016
Externally published	Yes

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

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10.1002/ctpp.201610032

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

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.",

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

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doi = "10.1002/ctpp.201610032",

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AU - Borodin, D.

AU - Kirschner, A.

AU - Tsvetkov, I. V.

AU - Kurnaev, V. A.

AU - Komm, M.

AU - Dejarnac, R.

AU - JET Contributors, Contributors

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KW - ERO code

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KW - Plasma-surface interaction

KW - beryllium, erosion

KW - electric field

KW - magnetic pre-sheath

KW - oblique magnetic field

KW - sputtering

KW - the Debye sheath

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

Abstract

Bibliographical note

Keywords

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