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Investigation of tungsten surface changes after interaction with dense plasma streams compared with the results given by a simple 1D model

  • Franciszek Dąbrowski , Łukasz Ciupiński , Monika Kubkowska , Grzegorz Pełka , Joanna Adamiec , Ewa Kowalska-Strzęciwilk , Włodzimierz Stępniewski , Marian Paduch and Ewa Zielińska
Published/Copyright: August 3, 2016

Abstract

In this work, plasma–target interactions on tungsten samples, carried out in a Mather-type plasma focus PF-1000 device, were investigated. The experimental results have been compared to 1D model computer simulations. Samples were studied by means of scanning electron microscopy, focused ion beam microscopy and precise measurements of weight loss. Additionally, simulations based on the numerical solution of a 1D heat conductivity equation were carried out. The samples exhibited relatively high resistance to the generated plasma streams. The practical work indicated a loss of about 1.54 mg per plasma focus discharge. The computer model calculations gave a weight loss one magnitude greater. An attempt to explain this discrepancy is given in the paper.


*Correspondence address, Mgr inż. Franciszek Dąbrowski, Faculty of Materials Science and Engineering, Warsaw University of Technology, J. Bytnara 25, 02-645 Warsaw, Poland, Tel.: +48 22 234 81 56, E-mail:

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Received: 2016-02-03
Accepted: 2016-04-15
Published Online: 2016-08-03
Published in Print: 2016-08-11

© 2016, Carl Hanser Verlag, München

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