Correlation between ND1 optical absorption and the concentration of negative vacancies determined by electron paramagnetic resonance (EPR)

Conference item

Electron paramagnetic resonance (EPR) and optical absorption data on the negative and neutral vacancy in diamond are presented. We determine directly the constant of proportionality between the concentration of V- and the integrated intensity of its zero-phonon line (ND1). Using the standard notation, the calculated value is f(ND1) = 4.8(2) x 10(-16) meV cm(2). This differs significantly from previous accepted results which used indirect methods of calculation. Using this new number we calculate a creation rate of 0.50(5) cm(-1) for 1.9 MeV electrons at room temperature - a factor of nearly seven greater than was previously thought. (C) 1999 Elsevier Science S.A. All rights reserved.

Authors: Twitchen, D; Hunt, D; Smart, V; Newton, M; Baker, M

• Publication status: Published
• Journal: DIAMOND AND RELATED MATERIALS
• Volume: 8
• Issue: 8-9
• Pages: 1572-1575
• Publication date: 1999-08-01
• Event title: 6th International Conference on New Diamond Science and Technology (ICNDST-6)
• DOI: 10.1016/S0925-9635(99)00038-2
• ISSN: 0925-9635
• Keywords: absorption; radiation-induced defects; spectroscopy; negative vacancy