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Related Concept Videos

X-ray Imaging01:24

X-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...
X-ray Crystallography02:18

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Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples
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Published on: June 19, 2018

Wide band focusing x-ray spectrograph with spatial resolution.

S A Pikuz1, J D Douglass, T A Shelkovenko

  • 1Cornell University, Ithaca, NY 14853, USA.

The Review of Scientific Instruments
|February 6, 2008
PubMed
Summary

A novel wide-bandwidth focusing spectrograph with spatial resolution (WB-FSSR) offers versatile X-ray diagnostics. This instrument provides high spectral and spatial resolution for various experimental needs.

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Area of Science:

  • Plasma physics
  • X-ray spectroscopy
  • Astrophysics

Background:

  • X-ray spectrographs are crucial for plasma diagnostics.
  • Existing instruments may lack the flexibility for diverse experimental requirements.
  • The need for high-resolution, wide-bandwidth X-ray diagnostics is persistent.

Purpose of the Study:

  • To introduce and describe a new wide-bandwidth focusing spectrograph with spatial resolution (WB-FSSR).
  • To demonstrate the WB-FSSR's capability for routine diagnostic applications across varying spectral needs.
  • To evaluate the spectral and spatial resolution of the WB-FSSR.

Main Methods:

  • Development of the wide-bandwidth focusing spectrograph with spatial resolution (WB-FSSR) utilizing spherically bent mica crystals.
  • Combining three crystals to create a large aperture dispersive element for wide spectral bandwidth.
  • Testing the WB-FSSR on a pulsed power machine during imploding wire-array experiments.

Main Results:

  • Successful recording of X-ray spectra in the 1-20 Å band using different orders of mica crystal reflection.
  • Demonstration of spectral resolution of approximately 2000.
  • Achieved spatial resolution of approximately 100 micrometers in the 5-10 Å spectral band (second order reflection).
  • Distinguishing real spectral shifts from those caused by plasma spatial distribution using a two-mirror configuration.

Conclusions:

  • The WB-FSSR is a versatile diagnostic tool suitable for experiments requiring different spectral coverages.
  • The instrument achieves high spectral and spatial resolution, enabling detailed plasma characterization.
  • A proposed numerical analysis method aids in assessing spectrograph capabilities.