Device for Correcting the Longitudinal Error of Chromatic Aberration of Radiation of Weighted Particles

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This invention provides a device and method to correct longitudinal chromatic aberration errors caused by radiation of massive particles (such as neutrons) in imaging or scattering experiments. The system uses at least one lens, detector, and a variable aperture (diaphragm), whose opening size can be adjusted in real time according to the wavelength of the particles passing through. By dynamically adapting the aperture size, undesirable aberrations due to differing particle energies are minimized, leading to sharper images and improved experimental resolution.

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• Improving resolution in neutron scattering experiments (e.g., small-angle neutron scattering, SANS).
• High-precision imaging with beams of massive particles (e.g., neutrons or electrons).
• Material structure investigations using neutron or electron imaging techniques.
• Scientific research facilities that require fine control of particle beam focusing and imaging quality, such as synchrotrons or neutron sources.
• Industrial quality control or non-destructive testing using particle beams.

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• Enables correction of chromatic aberrations (focus errors from wavelength dispersion), significantly improving image/shadow clarity and experimental precision.
• Simplifies the setup compared to traditional multi-lens correction systems, reducing cost and mechanical complexity.
• Allows real-time, adaptive adjustment for each pulse of particles, maximizing both resolution and usable particle flux.
• Enhances mechanical stability and durability as the variable aperture can be actuated reliably and with minimal wear.
• Maintains high particle intensity (brightness) while suppressing unwanted aberrations, unlike fixed small apertures which involve a sharp intensity loss.
• Versatile: can be used with various types of massive particle radiation, not just neutrons.

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Patent Abstract

The invention relates to a device for correcting the longitudinal error of chromatic aberration of radiation of massive particles comprising at least one lens (L), at least one detector (D) and at least one aperture (B) with an aperture opening (5), which is variable in size. The invention further relates to methods for correcting chromatic aberration.