Related Experiment Video
Updated: May 17, 2026
08:53
Single Plane Illumination Module and Micro-capillary Approach for a Wide-field Microscope
Published on: August 15, 2014
A new scheme for stigmatic x-ray imaging with large magnification
M Bitter1, K W Hill, L F Delgado-Aparicio
1Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA. bitter@pppl.gov
The Review of Scientific Instruments
|November 7, 2012
Summary
A novel x-ray imaging scheme uses two matched, spherically bent crystals to achieve stigmatic imaging, eliminating astigmatism for plasma diagnostics. This method offers adjustable magnification and is suitable for selected wavelengths.
Area of Science:
- Optics and X-ray Physics
- Plasma Diagnostics
Background:
- Astigmatism in X-ray imaging limits resolution and accuracy.
- Traditional X-ray optics often struggle with precise focusing for specific applications like plasma imaging.
Purpose of the Study:
- To introduce a new X-ray imaging scheme that achieves stigmatic imaging.
- To enable adjustable magnification for X-ray imaging applications.
- To overcome astigmatism limitations in X-ray crystal optics.
Main Methods:
- Utilizing one convex and one concave spherically bent crystal.
- Matching crystal radii of curvature and Bragg reflecting lattice planes.
- Selecting specific wavelengths from the bremsstrahlung continuum for plasma imaging.
Main Results:
- The proposed scheme eliminates astigmatism for stigmatic imaging at a particular wavelength.
- Magnification is adjustable and depends on Bragg angles.
- The working principle was successfully verified using visible light.
Conclusions:
- The new X-ray scheme effectively corrects astigmatism for high-quality imaging.
- This technique is promising for plasma imaging applications due to its adjustable magnification and wavelength selectivity.
- Further X-ray tests are planned to validate the system's performance.
Related Concept Videos
01:37Super-resolution Fluorescence Microscopy
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been developed.
01:22Overview of Microscopy Techniques
The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...
01:24X-ray Imaging
German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with X-rays, and by 1900, X-ray was widely...