An EDDY/particle-in-cell simulation of erosion of plasma facing walls bombarded by a collisional plasma

DOI Web Site Web Site Web Site 17 References

Bibliographic Information

Other Title
  • An EDDY particle in cell simulation of erosion of plasma facing walls bombarded by a collisional plasma

Search this article

Abstract

<jats:p> To investigate the erosion of a plasma-facing wall intersecting an oblique magnetic field, we performed a kinetic particle-in-cell (PIC) simulation of magnetized plasma, in which collision processes between charged and neutral particles were taken into account. Sheath formation and local physical quantities, such as the incident angle and energy distributions of plasma ions at the wall, were examined at a plasma density of 10<jats:sup>18</jats:sup> m<jats:sup>-3</jats:sup>, a temperature of 10 eV, and a magnetic field strength of 5 T. The erosion rate of a carbon wall was calculated using the ion–solid interaction code EDDY. At a high neutral density (>10<jats:sup>20</jats:sup> m<jats:sup>-3</jats:sup>), the impact energy of the ions dropped below the threshold for physical sputtering, so that the sputtering yield was drastically decreased and wall erosion was strongly suppressed. Sputter erosion was also suppressed when the angle of the magnetic field with respect to the surface normal was sufficiently large. </jats:p>

Journal

References(17)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top