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Two-line atomic fluorescence thermometry in the saturation regime

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Abstract

Two-line atomic fluorescence (TLAF) thermometry is based on the consecutive excitation of two nearby atomic ground states to a common excited state, and ratioing the ensuing fluorescence yields. TLAF is one of the few methods that hold promise for thermometry in sooting environments. We extend the method to the regime of fully saturated excitation and introduce a new seeding system that also allows the method to be used in lean flames. We compare results for saturated TLAF to those of linear TLAF and to thermocouple measurements, and find good correspondence. The saturated version introduced here maximizes fluorescence yields while simultaneously suppressing the dependence on excitation laser irradiance.

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Acknowledgments

The work of Y. Shoshin is supported by the Dutch Technology Foundation STW (Project 11616), which is part of the Netherlands Organization for Scientific Research (NWO), and which is partly funded by the Ministry of Economic Affairs.

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Authors and Affiliations

  1. Combustion Technology, Eindhoven University of Technology, PO Box 513, 5600 MB, Eindhoven, The Netherlands

    A. Manteghi, Y. Shoshin, N. J. Dam & L. P. H. de Goey

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  1. A. Manteghi
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  2. Y. Shoshin
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  3. N. J. Dam
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  4. L. P. H. de Goey
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Correspondence to N. J. Dam.

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Manteghi, A., Shoshin, Y., Dam, N.J. et al. Two-line atomic fluorescence thermometry in the saturation regime. Appl. Phys. B 118, 281–293 (2015). https://doi.org/10.1007/s00340-014-5984-x

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  • DOI: https://doi.org/10.1007/s00340-014-5984-x

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