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A powerful pulsed "point-like" neutron source based on the high-current ECR ion source.

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Researchers developed a compact neutron source for fast-neutron radiography using deuterium-deuterium fusion. A new focusing system significantly improved beam current and reduced spot size for enhanced radiography applications.

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Area of Science:

  • Nuclear Physics
  • Plasma Physics
  • Accelerator Physics

Background:

  • Development of compact neutron sources is crucial for applications like fast-neutron radiography.
  • Current methods often face limitations in beam current and spatial resolution.
  • The Institute of Applied Physics is exploring D-D fusion for effective neutron generation.

Purpose of the Study:

  • To investigate the creation of an effective and compact device for fast-neutron radiography.
  • To improve the performance of a "pointlike" neutron source based on D-D fusion.
  • To enhance deuterium ion beam current and reduce its spot size.

Main Methods:

  • Utilizing D-D fusion in a D-loaded target bombarded by a focused deuterium ion beam.
  • Employing a gasdynamic high-current Electron Cyclotron Resonance (ECR) ion source.
  • Analyzing a combined electrostatic and magnetic focusing system using the IBSimu code.

Main Results:

  • Previous experiments achieved a deuterium ion beam current of 60 mA focused to ~1 mm.
  • The proposed combined focusing system demonstrated potential to enhance total beam current.
  • The combined system is predicted to reduce the beam footprint to 0.13 mm.

Conclusions:

  • The developed "pointlike" neutron source shows promise for compact and effective fast-neutron radiography.
  • The combined electrostatic and magnetic focusing system offers a significant improvement over previous methods.
  • Further development could lead to practical, high-performance neutron radiography devices.