منابع مشابه
Amplitude 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...
متن کاملEXAFS Measurements of Laser-Generated Shocks with an Imploded Target as a Radiation Source
LLE Review, Volume 94 107 Introduction Recently, great interest has been shown in the study of dynamic material response to shocks of high pressure and high strain rate.1,2 Shocks of up to ~1 Mbar and strain rates of ~107 to 108 s-1 were generated in metals (Al, Cu) by laser irradiation. The laser intensity in those experiments (~1011 W/cm2) was high enough to raise the pressure above the Hugon...
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ژورنال
عنوان ژورنال: Nihon Kessho Gakkaishi
سال: 1987
ISSN: 0369-4585,1884-5576
DOI: 10.5940/jcrsj.29.228