Simulation of Energy Distribution for Scanning X-ray Probe

✍ Scribed by Iwai, Hideo; Oiwa, Retsu; Larson, Paul E.; Kudo, Masahiro

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 453 KB
• Volume: 25
• Category: Article
• ISSN: 0142-2421
• DOI: 10.1002/(sici)1096-9918(199703)25:3<202::aid-sia227>3.0.co;2-g

✦ Synopsis

The energy distribution of a scanning x-ray probe which is equipped with an elliptical mirror monochromator has been simulated with optical ray tracing, a numerically described energy distribution of Al Ka x-ray and a rocking curve. The rocking curve was estimated by dynamic di †raction theory with structure factors for quartz. The peak energy of the di †racted x-ray beam did not change with beam size, although the shapes of energy distribution were found to change slightly. Using the simulated x-ray energy distribution and the apparatus function, the energy width of the Fermi edge was simulated, which is to be compared with that obtained experimentally by monochromatic Al Ka x-ray excitation. The widths of the silver Fermi edge spectra were measured with di †erent x-ray beam sizes. In addition, the relation between the x-ray beam position on the anode and the di †racted x-ray energy distribution was investigated. The peak energy of the di †racted x-ray beam was found to move with the x-ray beam position. It is shown that this kind of simulation can be e †ectively used for estimating the energy distribution and the intensity distribution of the di †racted x-ray beam.

1997 by John