Positron lifetime spectroscopy with optical excitation: case study of natural diamond

J.-M. Mäki, T. Kuittinen, E. Korhonen, F. Tuomisto

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In this paper, we report positron lifetime results obtained under high-power steady-state and transient optical excitation. We present a model for analysing the results. The method has been applied to vacancy clusters in natural diamond, for which we self-consistently analyse optoelectronic constants such as optical absorption cross-section and hole recombination cross-section. The temperature dependences of transient and steady-state measurements are studied, suggesting the possibility of analysing the positron trapping to extended defects and vacancy clusters in semiconductors.
Original languageEnglish
Article number032023
Pages (from-to)1-16
Number of pages16
JournalNew Journal of Physics
Publication statusPublished - 30 Mar 2012
MoE publication typeA1 Journal article-refereed


  • diamond
  • optical transient
  • positron specotroscpy

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