Abstract
Application of thin reference absorbers namely α-Fe foil, sodium nitroprusside, potassium ferricyanide and potassium ferrocyanide for testing and control of the velocity driving system in the high-quality and -sensitivity Mössbauer spectrometers is demonstrated. The deviation of the absorption line from Lorentzian shape may be considered as indicator of the velocity driving system being out-of-tune. Such an estimation of the differential nonlinearity of the velocity ranges is much more sensitive than that by laser interferometer. This testing and control of the velocity driving system provide the measurements of high-quality and precision Mössbauer spectra and avoid getting the poor spectra with obtaining artifact results.
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Acknowledgements
The authors wish to thank Prof. D.L. Nagy (Wigner Research Centre for Physics, Budapest, Hungary) for many fruitful discussions concerning methodological aspects. This work was supported by the Ministry of Science and Higher Education of the Russian Federation, project № FEUZ-2020-0060.
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This article is part of the Topical Collection on Proceedings of the International Conference on the Applications of the Mössbauer Effect (ICAME 2021), Brasov, Romania, 5-10 September 2021
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Oshtrakh, M.I., Semionkin, V.A. Testing of the velocity driving system in Mössbauer spectrometers using reference absorbers. Hyperfine Interact 242, 28 (2021). https://doi.org/10.1007/s10751-021-01761-3
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DOI: https://doi.org/10.1007/s10751-021-01761-3