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Slits as adjustable pinholes for coherent X-ray scattering experiments.

E Vlieg, S A De Vries, J Alvarez

    Journal of Synchrotron Radiation
    |July 1, 1997
    PubMed
    Summary

    Accurate translation stages and polished slit blades create adjustable X-ray pinholes, enabling micrometer-sized beams for coherent X-ray scattering experiments. These versatile slits are easy to set up and suitable for hard X-rays.

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    Area of Science:

    • Physics
    • Materials Science

    Background:

    • Coherent X-ray scattering experiments require precise beam control.
    • Traditional pinholes can be limited in adjustability and minimum achievable size.

    Purpose of the Study:

    • To develop and characterize adjustable slits for use as pinholes in coherent X-ray scattering.
    • To demonstrate the capability of achieving micrometer-sized X-ray beams.

    Main Methods:

    • Utilizing accurate translation stages and polished tungsten slit blades (1 mm thickness).
    • Deriving the relationship between slit-sample distance and minimum beam size.
    • Adjusting slit size down to 0.5 mum.

    Main Results:

    • Slits offer adjustable apertures down to 0.5 mum.

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  • The developed slits are suitable for hard X-rays due to blade thickness.
  • A micrometer-sized beam can be achieved through precise control of slit-sample distance and slit size.

    • Conclusions:

    • The combination of translation stages and polished slits provides an effective and versatile solution for X-ray pinholes.
    • This method facilitates the generation of highly focused X-ray beams for advanced scattering experiments.