Related Experiment Video
Updated: Apr 30, 2026
10:39
Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
Published on: October 11, 2016
9.1K
X-ray harmonics rejection on third-generation synchrotron sources using compound refractive lenses
Maxim Polikarpov1, Irina Snigireva2, Anatoly Snigirev2
1National Research Nuclear University `Mephi', 31 Kashirskoe Shosse, 115409 Moscow, Russian Federation.
Journal of Synchrotron Radiation
|April 26, 2014
Summary
A novel X-ray optics method effectively suppresses high-energy harmonics. This technique uses refractive lenses and off-axis illumination for precise energy spectrum separation, significantly improving X-ray beam purity for advanced research.
Area of Science:
- Physics
- Optics
- Materials Science
Background:
- Harmonic radiation in X-ray beams can interfere with experiments.
- Existing methods for harmonic rejection have limitations.
Purpose of the Study:
- To develop and demonstrate a new method for efficient X-ray harmonics rejection.
- To utilize X-ray refractive optics for spatial separation of energy spectra.
Main Methods:
- Proposed a method using X-ray refractive optics with off-axis illumination.
- Employed compound refractive lenses in an X-ray transfocator.
- Utilized a screen absorber or slit to block unfocused radiation.
- Performed experiments at the ESRF ID06 beamline in in-line geometry.
Main Results:
- Achieved a reduction of the third harmonic to 10⁻³.
- Suppressed all higher-order harmonics by five orders of magnitude.
- Demonstrated effective spatial separation of the energy spectrum.
Conclusions:
- The proposed method offers efficient harmonics rejection using X-ray refractive optics.
- This technique is suitable for third-generation synchrotron radiation sources and future storage rings.
- The energy-dependent focal distance of refractive lenses is key to this harmonic suppression method.
