منابع مشابه
Detection Systems for Fluorescence Exafs Measurement
The fluorescence detection systems currently in use for the measurement of EXAFS at the Daresbury Synchrotron Radiation Source are described. Each system consists of an array of NaI(T1) scintillation detectors. Methods of reducing the proportion of counts due to scatter are discussed. The advantages and problems associated with alternative detection systems are reviewed. Results are presented f...
متن کاملAmplitude reduction in EXAFS.
In real systems, inelastic processes remove photoelectrons from the elastic scattering channel. This reduces the amplitude of the EXAFS causing disagreement between the experimental and theoretically predicted amplitudes. Traditionally these discrepancies were treated by including two semi empirical reduction factors in the data analysis: a mean tree path term, which models the so called extrin...
متن کاملOverview of the standard EXAFS data analysis procedure Introduction Interpretation of EXAFS data is normally based on the EXAFS equation
with appropriate accomodation for forward scattering (\focussing e ect") for higher shells, and inclusion of higher cumulants as necessary. The aim of data analysis is to determine the distances, coordination numbers, disorder parameters and types of atoms in the various coordination shells for the \unknown" sample. The extent to which this is possible depends on the nature of the system, the q...
متن کاملOther Exafs-like Phenomena
A description and comparison of various EXAFS-like phenomena are presented based on theoretical and practical considerations. Most of the phenomena are similar but not exactly the same as EXAFS. This does not limit their usefulness for structure determination but requires separate experimental calibration and theoretical calculations.
متن کاملOverview of the standard EXAFS data analysis procedure Introduction Interpretation of EXAFS data is normally based on the EXAFS equation
with appropriate accomodation for forward scattering (\focussing e ect") for higher shells, and inclusion of higher cumulants as necessary. The aim of data analysis is to determine the distances, coordination numbers, disorder parameters and types of atoms in the various coordination shells for the \unknown" sample. The extent to which this is possible depends on the nature of the system, the q...
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ژورنال
عنوان ژورنال: Nihon Kessho Gakkaishi
سال: 1985
ISSN: 0369-4585,1884-5576
DOI: 10.5940/jcrsj.27.106