section_path: Neutron temperature/High-energy neutrons
section_name: High-energy neutrons
paragraph_text: High-energy neutrons
  
  High-energy neutrons have much more energy than fission energy neutrons and are generated as secondary particles by particle accelerators or in the atmosphere from cosmic rays. These high-energy neutrons are extremely efficient at ionization and far more likely to cause cell death than X-rays or protons.