gamma-Ray wavelength standard for atomic scales.
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 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.
Shvyd'ko
Y V
YV
II. Institut für Experimentalphysik, Universität Hamburg, D-22761 Hamburg, Germany.
Lerche
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Jäschke
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Lucht
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Gerdau
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Gerken
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Rüter
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Wille
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Becker
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Alp
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Sturhahn
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Sutter
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Toellner
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