Effect of Isotope Concentration on the Lattice Parameter of Germanium Perfect Crystals
THE DIFFERENCE IN LATTICE PARAMETERS BETWEEN GERMANIUM CRYSTALS OF NATURAL ISOTOPIC COMPOSITION AND AN ISOTOPICALLY ENRICHED CRYSTAL OF 74 GE WAS CALCU- LATED AND MEASURED BY USING A DOUBLE BEAM TRIPLE AXIS X-RAY SPECTROMETER. THE MEASURED RELATIVE FRACTIONAL DIFFERENCE WAS (-6.3+-0.3) X 10-6 AND (-14.9+-0.3) X 10-6 AT ROOM AND LIQUID NITROGEN TEMPERATURES RESPECTIVELY. THE CORRESPONDING CALCULATED VALUES ARE - 6 X 10-6 AND - 12 X 10-6. THE AGREEMENT IS VERY GOOD, GIVEN UNCERTAINTIES IN THE VALUES OF PHYSICAL CONSTANTS USED FOR THE THEORETICAL CALCULATIONS.
MERLINI Alfonso;
PACE Sergio;
RODRIGUEZ S.;
BUSCHERT R.C.;
GRIMSDITCH M.;
1995-03-15
JRC5478
https://publications.jrc.ec.europa.eu/repository/handle/JRC5478,
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