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Direct nn-Scattering Measurement With the Pulsed Reactor YAGUAR.

G E Mitchell1, W I Furman2, E V Lychagin2

  • 1North Carolina State University, Raleigh NC, USA 27695-8202.

Journal of Research of the National Institute of Standards and Technology
|June 17, 2016
PubMed
Summary
This summary is machine-generated.

Direct measurement of neutron-neutron (nn) scattering, crucial for understanding nuclear forces, is now feasible. Experiments using the YAGUAR reactor aim to provide the first direct data on nn-scattering.

Keywords:
charge-symmetry breakingnn-scatteringpulsed reactor

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Area of Science:

  • Nuclear Physics
  • Particle Physics

Background:

  • Direct measurement of neutron-neutron (nn) scattering is essential for resolving charge symmetry in nuclear forces.
  • Historically, direct nn-scattering experiments have not been performed due to technical challenges.
  • The Russian pulsed reactor YAGUAR presents a unique opportunity for such measurements.

Purpose of the Study:

  • To perform the first direct measurement of neutron-neutron (nn) scattering.
  • To utilize the YAGUAR reactor's capabilities for high-flux neutron generation.
  • To contribute crucial data for understanding the nuclear force.

Main Methods:

  • Employing the YAGUAR pulsed reactor as a high-intensity neutron source.
  • Utilizing a through channel with a neutron moderator for neutron generation.
  • Detecting neutrons with a specialized detector positioned 12 meters from the reactor.

Main Results:

  • Preliminary experiments achieved a thermal neutron flux density of 1.1 × 10^18 /cm^2s.
  • The experimental setup is established for the DIANNA Collaboration's project.
  • The YAGUAR reactor demonstrates suitability for direct nn-scattering studies.

Conclusions:

  • The YAGUAR reactor is the most promising neutron source for direct nn-scattering measurements.
  • The DIANNA Collaboration is poised to conduct this groundbreaking experiment.
  • Successful measurement will provide vital insights into nuclear force charge symmetry.