γ -Ray Wavelength Standard for Atomic Scales
2000; American Physical Society; Volume: 85; Issue: 3 Linguagem: Inglês
10.1103/physrevlett.85.495
ISSN1092-0145
AutoresYuri Shvyd’ko, M. Lerche, Johannes Jäschke, M. Lucht, E. Gerdau, Martina Gerken, H. D. Rüter, Hans‐Christian Wille, Peter Becker, E. Ercan, W. Sturhahn, John P. Sutter, T. S. Toellner,
Tópico(s)Advanced Electron Microscopy Techniques and Applications
ResumoThe 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 lambda(M) = 0.860 254 74(16)x10(-10) m. The corresponding Mössbauer photon energy is E(M) = 14 412.497(3) eV. The wavelength of the 57Fe Mössbauer radiation is easily reproducible with an accuracy of at least 10(-11)lambda(M) and could be used as a length standard of atomic dimensions.
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