Multiple internal reflection infrared spectroscopy is used to investigate the reaction of atomic hydrogen with a polished, natural type IIa diamond (110) dehydrogenated surface held at 673 K. A single infrared absorption band at 2880 cm−1 is observed and is attributed to the C-H stretching mode on an sp3 hybridized surface carbon. The band is stable up to surface temperatures between 1073 and 1173 K, and is absent when the dehydrogenated surface is exposed to atomic deuterium.
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McGonigal et al. (1995) studied this question.
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