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A Bragg silicon lattice comparator

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7 Author(s)
F. Alasia ; Istituto di Metrologia, CNR, Torino, Italy ; G. Basile ; P. Becker ; U. Kuetgens
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The basic principle and the results of the feasibility study of a Bragg lattice parameter comparator, developed within the framework of the Standards, Measurements, and Testing European Project silicon for mass unit and standard (SIMUS) are described. It combines a Bragg lattice comparator (Hart-Hausermann design) and an X-ray angle interferometer to determine the angular position of diffraction peaks. Comparisons between Si crystals with a relative uncertainty of 1×10-8 are expected

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IEEE Transactions on Instrumentation and Measurement  (Volume:50 ,  Issue: 2 )