| Issue |
J. Phys. IV France
Volume 7, Number C2, Avril 1997
Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure
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|---|---|---|
| Page(s) | C2-143 - C2-144 | |
| DOI | https://doi.org/10.1051/jp4/1997143 | |
Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure
J. Phys. IV France 7 (1997) C2-143-C2-144
DOI: 10.1051/jp4/1997143
Faculty of Science, Chiba University, Inage-ku, Chiba 263, Japan
© EDP Sciences 1997
J. Phys. IV France 7 (1997) C2-143-C2-144
DOI: 10.1051/jp4/1997143
Theory of Debye-Waller and Franck-Condon Factors in EXAFS
T. FujikawaFaculty of Science, Chiba University, Inage-ku, Chiba 263, Japan
Abstract
The effect of atomic displacement on EXAFS aller core hole production is studied within the
harmonic approximation for atomic vibration and single scattering approximation. With aid of Schwinger
method we obtain the widely used Debyc-Wallcr factor, the Condon factor and their interference term. T he
second term gives the damping of EXAFS oscillation and energy shift of inner potential, and the interference
term gives rise to a phase factor as linear function of photoelectron momentum k. The lifetime effect is also
studied here.
© EDP Sciences 1997