Title: Effect of Isotope Concentration on the Lattice Parameter of Germanium Perfect Crystals
Authors: MERLINI AlfonsoPACE SergioRODRIGUEZ S.BUSCHERT R.c.GRIMSDITCH M.
Citation: Physical Review B vol. 38 no. 8 p. 5219-5221
Publication Year: 1988
JRC N°: JRC5478
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC5478
Type: Articles in Journals
Abstract: 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.
JRC Institute:Joint Research Centre Historical Collection

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