tailieunhanh - Detection of Neutrons

As charge-neutral particles, neutrons can only interact via strong interactions and ionize via secondary reactions. Most neutron detectors consist of a material that converts neutrons into charged particles within a conventional radiation detector | XI. Detection of Neutrons Remarks Slow neutron detection Fast neutron detection Spring 2010 Radiation Detection Measurements 1 Reminder Interactions of Neutrons As charge-neutral particles neutrons can only interact via strong interactions and ionize via secondary reactions Most neutron detectors consist of a material that converts neutrons into charged particles within a conventional radiation detector We have to distinguish two classes of interactions - Slow neutrons thermal and epithermal E 1 keV Radiative capture n Y Charged particle production reaction n p n a . Neutron-capture induced fission 235U 239Pu . - Fast neutrons E 1 keV Elastic scattering n n Inelastic scattering n n Charged particle production n xn n xpn fission . Spring 2010 Radiation Detection Measurements 2 Neutron- Energies - I. Relative neutron flux Neutron energies form 1 MW research reactor Neutron energy eV Spring 2010 Radiation Detection Measurements

• Năng lượng
• Neutron energies
• Compound nucleus
• Neutron Detection
• Neutron Reactions
• Filled Detectors
• Proportional Counter
• A study of neutron emission spectra
• Neutron emission spectra
• Angular distribution of neutron
• Targets of heavy elements
• The different energies of proton
• Elastic scattering
• Microscopic optical potential
• Pairing correlations
• Skyrme interaction
• Neutron elastic scattering at low energies
• Nuclear engineering and technology
• Model based predictions for nuclear excitation functions
• Neutron induced reactions on 64
• 66
  68Zn targets
• Cross Section Systematic
• Energies around 14e15 MeV