e-Journal of Surface Science and Nanotechnology
Online ISSN : 1348-0391
ISSN-L : 1348-0391
Conference -ISSS-7-
Potential Effects in the Interaction of Highly Charged Ions with Solid Surfaces
Makoto SakuraiKouji SasakiTakahiro MiyamotoDaiji KatoHiroyuki A. Sakaue
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2016 Volume 14 Pages 1-3


In the field of nuclear fusion technology, Er2O3 thin film is a candidate for the coating material of the blanket of thermonuclear fusion reactor. It is known that the luminescence of Er2O3 provides information on its crystallinity. We observed luminescence of various samples including Er2O3 during the irradiation with highly charged ions produced by an electron beam ion source (EBIS) as a function of charge state and kinetic energy of incident Ar ions. We found that the luminescence intensity non-linearly rises as the charge state increases and is independent of kinetic energy. This demonstrates that the luminescence arises from the potential energy of highly charged ions rather than the kinetic energy. Emission spectra from various samples indicate that emission from sputtered atoms, mostly atomic hydrogen, is remarkable, while emission lines from the surface layers due to transitions among Stark splitting were observed for Er2O3 samples. [DOI: 10.1380/ejssnt.2016.1]

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