Study by HREELS of elementary reactions on graphite surface induced by Ar+ and H+ ion bombardment

Autor:	Denis Roy, Marc Portail, Jean-Marc Layet, Nicolas Papageorgiou, Isabelle Forbeaux, Marcel Carrere
Rok vydání:	2000
Předmět:	Range (particle radiation) Ion beam Chemistry Electron energy loss spectroscopy Analytical chemistry Surfaces and Interfaces Condensed Matter Physics Chemical reaction Surfaces Coatings and Films Ion Elementary reaction Materials Chemistry Graphite Plasmon
Zdroj:	Surface Science. :384-389
ISSN:	0039-6028
DOI:	10.1016/s0039-6028(00)00086-8
Popis:	We used high-resolution electron energy loss spectroscopy to study the effect of Ar + and H + ion bombardment on a highly oriented pyrolitic graphite sample. Ion beam fluences in the range 1O 14 to 4×10 16 cm −2 were used with an ion impact energy of 5 keV. For a low ion fluence (of Ar + and H + ), the low energy π-plasmon of graphite is shifted toward lower energies, while for higher fluences (>10 16 cm −2 ), the plasmon vanishes behind an increasing background. In the case of H + ion bombardment, supplementary chemical reactions take place on the surface, and we report CH stretching modes induced by the bombardment. We relate the above observations with structural and chemical modifications induced by the ion bombardment and compare with previous results.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::654e7073dbfaba7a1e4ed8a3aa174cc9 https://doi.org/10.1016/s0039-6028(00)00086-8 Zobrazit plný text záznamu Full Text from ScienceDirect