Atomic data for integrated tokamak modelling – Fermi-shuttle type ionization as a possible source of high energy electrons

K Tőkési,D Tskhakaya,D Coster

doi:10.1051/epjconf/20137902003

Abstract

The ionization of Ar by 15 keV N+ ion is studied theoretically. The energy distributions of the ejected electrons as a function of the scattering angle were calculated using the classical trajectory Monte Carlo method. We identify the signature of the Fermi-shuttle type ionization in the double differential cross sections which should be a possible source of the high energy electrons in the plasma. Our classical calculation also describes the previously measured data with high accuracy.

Highlights

The Integrated Tokamak Modeling Task Force (ITM-TF) was set up in 2004
We identify the signature of the Fermishuttle type ionization in the double differential cross sections which should be a possible source of the high energy electrons in the plasma
We found electron yields even for n = 14 of classical trajectory Monte Carlo (CTMC) spectra

Summary

Introduction

The Integrated Tokamak Modeling Task Force (ITM-TF) was set up in 2004. The main target is to coordinate the European fusion modeling effort and providing a complete European modeling structure for International Thermonuclear Experimental Reactor (ITER) and other future magnetic confinement devices (e.g. DEMO) with the highest degree of flexibility. One the ITM-TF projects is the collection, verification and implementation of the atomic, molecular, nuclear and surface related data relevant for fusion. Naturally in atomic level the number scattering is much less compared with the case of giant magnetic field, but even after a few back and forth collisions the active electron can gain enormous energy

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Conclusion