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Related Concept Videos

Overview of Electron Microscopy01:25

Overview of Electron Microscopy

The wavelengths of visible light ultimately limit the maximum theoretical resolution of images created by light microscopes. Most light microscopes can only magnify 1000X, and a few can magnify up to 1500X. Electrons, like electromagnetic radiation, can behave like waves, but with wavelengths of 0.005 nm, they produce significantly greater resolution up to 0.05 nm as compared to 500 nm for visible light. An electron microscope (EM) can create a sharp image that is magnified up to 2,000,000X.
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Transmission Electron Microscopy01:15

Transmission Electron Microscopy

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Updated: Jul 2, 2026

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
08:48

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Published on: September 25, 2020

A neutral beam sciopticon.

P M Ryan1, J H Whealton, R C Davis

  • 1Oak Ridge National Laboratory, Oak Ridge, Tennesse 37830, USA.

The Review of Scientific Instruments
|September 1, 1979
PubMed
Summary
This summary is machine-generated.

A novel sciopticon technique analyzes neutral beam quality from ion sources. This method identifies individual beamlet contributions and optical effects for improved beam performance.

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Area of Science:

  • Physics
  • Plasma Physics
  • Beam Optics

Background:

  • Neutral beams are crucial for various applications, including fusion energy.
  • Understanding beamlet contributions is key to optimizing neutral beam quality.
  • Existing methods may not fully resolve individual beamlet optical characteristics.

Purpose of the Study:

  • To introduce and validate a sciopticon-based technique for analyzing neutral beam quality.
  • To determine the contribution of individual beamlets to the overall neutral beam quality.
  • To investigate optical effects impacting neutral beams from multiaperture ion sources.

Main Methods:

  • Utilizing a sciopticon device that operates on the pinhole-camera effect principle.
  • Measuring individual beamlet contributions to the quality of extracted neutral beams.
  • Applying the technique to study various optical aberrations and their impact.

Main Results:

  • The sciopticon method successfully differentiates individual beamlet contributions.
  • The technique can identify optical effects arising from plasma density, acceleration gaps, grid alignment, and neutralizer cell interactions.
  • This provides a detailed understanding of factors degrading beam quality.

Conclusions:

  • The sciopticon technique offers a powerful tool for diagnosing neutral beam quality.
  • It enables the study of specific optical issues in multiaperture ion sources.
  • This research contributes to the advancement of neutral beam technology and applications.