Publication: Characteristics of the modification of the near-surface layer and sputtering of graphite under high intensity ion irradiation
Дата
2020
Авторы
Puntakov, N. A.
Begrambekov, L. B.
Grunin, A. V.
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© Published under licence by IOP Publishing Ltd.In this paper, features of the modification of near-surface layer of R6510P100D01 grade graphite under irradiation by deuterium and helium ions at a temperature of 2050 °C is investigated. It is shown that irradiation by such ions at a flux density of 1,4×1018 ion/cm2s initiates vacancy transport from the irradiated surface to the bulk of the sample, leading to the formation of a porous layer inside the sample with a thickness of over 2 mm. High sputtering yields, exceeding those for irradiation by the same ions at room temperature with a moderate intensity ion fluxes, lead to the conclusion that in these conditions, sublimation is the main mechanism of the removal of carbon atoms from the surface of graphite.
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Puntakov, N. A. Characteristics of the modification of the near-surface layer and sputtering of graphite under high intensity ion irradiation / Puntakov, N.A., Begrambekov, L.B., Grunin, A.V. // Journal of Physics: Conference Series. - 2020. - 1713. - № 1. - 10.1088/1742-6596/1713/1/012037