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The Accuracy of Measurements of the Spectral-Line Frequencies in the Studies of the Rotational Transitions of the 16O12C32S Molecule in the Millimeter and Submillimeter Wave Ranges

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Radiophysics and Quantum Electronics Aims and scope

The absolute error of determining the center frequency of the molecule spectral line during a single measurement, which is obtained by fitting the line shape to the model profile, is usually significantly smaller than the statistical spread in the frequencies of the repeated measurements. We discuss the possible causes of the systematic errors leading to an increase in the uncertainty of measurements of the line-center frequency. For an example of the multiple spectral measurements of the rotational transitions of the 16O12C32S molecule in the millimeter- and submillimeter-wave ranges (with a frequency of up to 522 GHz), by the Lamb-dip method, we determine the absolute error of the performed measurements, which amounts to 0.4 kHz. New precision values of the center frequencies of the rotational transitions of the 16O12C32S molecule and more accurate values of the rotational constants, which are calculated using the measured frequencies, are presented.

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Authors and Affiliations

  1. Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia

    G. Yu Golubiatnikov, S. P. Belov & A. V. Lapinov

  2. NI. Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia

    A. V. Lapinov

Authors
  1. G. Yu Golubiatnikov
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  2. S. P. Belov
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  3. A. V. Lapinov
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Corresponding author

Correspondence to G. Yu Golubiatnikov.

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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 58, No. 8, pp. 691–701, August 2015.

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Golubiatnikov, G.Y., Belov, S.P. & Lapinov, A.V. The Accuracy of Measurements of the Spectral-Line Frequencies in the Studies of the Rotational Transitions of the 16O12C32S Molecule in the Millimeter and Submillimeter Wave Ranges. Radiophys Quantum El 58, 622–631 (2016). https://doi.org/10.1007/s11141-016-9634-5

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  • DOI: https://doi.org/10.1007/s11141-016-9634-5

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