3 ms·

Wonder if one could use muography to detect passing submarines

• RickyS 2y ago
  It's a bit challenging as the submarine would need to stand still for a while and not be very deep but some people has thought about that.
• cameldrv 2y ago
  Another one along these lines is antineutrinos. They're created by fission reactions, so a nuclear reactor puts out a lot of them. From what's available in the open literature, this seems like it might be getting close to being practical.
  • TheSpiceIsLife 2y ago
    Fission reactors spew neutrinos, no need for anti-
    • Timwi 2y ago
      Antineutrinos are produced in nuclear reactors when the radioactive products of nuclear fission undergo beta decay. Source: https://physics.aps.org/articles/v10/66 https://physics.aps.org/articles/v10/66
      • TheSpiceIsLife 2y ago
        Ah, right. This publication[1] says neutrinos, but the article it references says antineutrinos[2]. That explains my misunderstanding. 1 https://www.energy.gov/science/np/articles/detecting-neutrinos-nuclear-reactors-water https://www.energy.gov/science/np/articles/detecting-neutrin... 2. https://www.osti.gov/pages/biblio/1959810-evidence-antineutrinos-from-distant-reactors-using-pure-water-sno+ https://www.osti.gov/pages/biblio/1959810-evidence-antineutr...
• webdoodle 2y ago
  Yes. Nato is has been testing the Watchment muon detection system that was designed to track nuclear material, specifically looking for nuclear submarines. https://thedebrief.org/darpas-secretive-new-neutrino-detector-program-could-be-a-game-changer-for-global-underwater-military-surveillance/ https://thedebrief.org/darpas-secretive-new-neutrino-detecto...