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Related Experiment Videos

Neutron angular distribution in a plasma focus obtained using nuclear track detectors.

F Castillo-Mejía1, J J E Herrera, J Rangel

  • 1Instituto de Ciencias Nucleares, UNAM, México, DF, Mexico.

Radiation Protection Dosimetry
|October 18, 2002
PubMed
Summary

CR-39 nuclear track detectors effectively measured neutron angular distribution from dense plasma focus (DPF) devices. The study found neutron emissions were 70% isotropic and 30% anisotropic.

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Area of Science:

  • Plasma Physics
  • Nuclear Fusion Diagnostics
  • Radiation Detection

Background:

  • Dense plasma focus (DPF) devices generate high-temperature, high-density plasma for fusion research.
  • Neutron production in DPF devices filled with deuterium is linked to deuteron beams accelerated by plasma instabilities.
  • Neutron emission exhibits anisotropic angular distribution due to beam-target interactions.

Purpose of the Study:

  • To demonstrate the utility of CR-39 nuclear track detectors for measuring time-integrated neutron angular distributions.
  • To quantify the isotropic and anisotropic components of neutron emission from a DPF device.

Main Methods:

  • Utilized CR-39 nuclear track detectors to record neutron-induced tracks.
  • Analyzed track densities and distributions to determine neutron angular distribution.

Related Experiment Videos

  • Calculated the percentage contribution of isotropic and anisotropic neutron radiation.

    • Main Results:

    • CR-39 detectors provided a reliable method for time-integrated neutron angular distribution measurements.
    • Neutron emission was characterized by a significant isotropic component (70%).
    • An anisotropic component, peaked in the forward direction, contributed 30% to the total neutron emission.

    Conclusions:

    • CR-39 detectors are a valuable diagnostic tool for characterizing neutron emission in DPF experiments.
    • The findings provide insights into the physics of neutron production and transport in DPF devices.
    • Understanding neutron angular distribution is crucial for optimizing fusion yields and diagnostics.