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APS » Journals » Phys. Rev. Lett. » Volume 85 » Issue 3
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Phys. Rev. Lett. 85, 495–498 (2000)

γ-Ray Wavelength Standard for Atomic Scales

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Yu. V. Shvyd'ko, M. Lerche, J. Jäschke, M. Lucht, E. Gerdau, M. Gerken, H. D. Rüter, and H.-C. Wille
II. Institut für Experimentalphysik, Universität Hamburg, D-22761 Hamburg, Germany

P. Becker
Physikalisch-Technische Bundesanstalt, Postfach 3345, D-38023 Braunschweig, Germany

E. E. Alp, W. Sturhahn, J. Sutter, and T. S. Toellner
Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439

Received 28 January 2000; published in the issue dated 17 July 2000

See accompanying Physics Focus

The wavelength of the 57Fe Mössbauer radiation is measured with a relative uncertainty of 0.19 ppm by using almost exact Bragg backscattering from a reference silicon crystal. Its value is determined as λM = 0.86025474(16)×10-10 m. The corresponding Mössbauer photon energy is EM = 14412.497(3) eV. The wavelength of the 57Fe Mössbauer radiation is easily reproducible with an accuracy of at least 10-11λM and could be used as a length standard of atomic dimensions.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.85.495
DOI:
10.1103/PhysRevLett.85.495
PACS:
06.20.Fn, 21.10.-k, 61.10.-i, 76.80.+y
 
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