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An additional axis for the surface X-ray diffractometer.

M Takahasi¹, J Mizuki

¹JAERI, SPring-8, Kamigori, Ako-gun, Hyogo 678-12, Japan.

Journal of Synchrotron Radiation

|July 21, 2004

Summary

A novel surface X-ray diffractometer enhances surface structure factor measurements. Its unique rotational slit enables accurate data collection across a wide range of momentum transfers.

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Area of Science:

Materials Science
Solid State Physics
Surface Science

Background:

Surface X-ray diffraction is crucial for understanding surface structures.
Accurate measurements require precise control over scattering geometry.
Existing diffractometers may have limitations in measuring large momentum transfers.

Purpose of the Study:

To introduce a new surface X-ray diffractometer at SPring-8.
To enable accurate surface structure factor measurements, especially at high momentum transfer.
To improve the capabilities of surface structure analysis.

Main Methods:

Installation of a kappa-type diffractometer with an additional detector arm axis.
Incorporation of a rotational slit for precise angle control.
Development of a correction factor for z-axis mode measurements.

Main Results:

The new diffractometer allows for precise control of the receiving slit.
Accurate surface structure factor measurements are achievable.
The system effectively handles large perpendicular momentum transfer.

Conclusions:

The enhanced diffractometer design facilitates more accurate surface structure analysis.
This instrument advances the field of surface science research.
It provides a powerful tool for probing surface atomic arrangements.

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