A Raman investigation into the effect of temperature on ion-induced damage of graphite

Theodosiou, Alex ORCID: https://orcid.org/0000-0001-6504-6737, Carley, Albert Frederick and Taylor, Stuart H. ORCID: https://orcid.org/0000-0002-1933-4874 2012. A Raman investigation into the effect of temperature on ion-induced damage of graphite. Journal of Nuclear Materials 426 (1-3) , pp. 26-30. 10.1016/j.jnucmat.2012.03.023

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Abstract

Samples of highly-orientated pyrolytic graphite (HOPG) have been irradiated with 5 keV He+ and Xe+ ions at temperatures of 298 K and 100 K. Irradiation-induced damage has been monitored using Raman spectroscopy through analysis of the intensity of the D-band with respect to the G band (ID/IG ratio). A significant increase in the rate of damage accumulation was observed after ion-irradiation at 100 K, leading to a very broad Raman spectrum. The emergence of a broad feature at ∼1500 cm−1 is also observed and attributed to a significant breakdown of lattice order and the presence of a more amorphous system. This feature is thought to be due to a carbon-ion interaction.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Subjects:	Q Science > QD Chemistry
Publisher:	Elsevier
ISSN:	0022-3115
Last Modified:	05 Jan 2023 14:37
URI:	https://orca.cardiff.ac.uk/id/eprint/27564

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