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Thread: Neutrino source

  1. #1 Neutrino source 
    Geo
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    When detecting neutrinos underground, how do we know whether they're solar neutrinos or geoneutrinos?

    So few are detected. Is it just more probable that they're from the sun due to the huge numbers passing through the Earth?. Does the source matter?, since so few are detected.


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  3. #2 Re: Neutrino source 
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    Quote Originally Posted by Geo
    When detecting neutrinos underground, how do we know whether they're solar neutrinos or geoneutrinos?

    So few are detected. Is it just more probable that they're from the sun due to the huge numbers passing through the Earth?. Does the source matter?, since so few are detected.
    Neutrinos result from nuclear reactions (fusion or decay mostly). The overwhelming number come from the sun. One of the main points of this activity is to understand neutrinos better, and also to compare neutrino production theory with observation.


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  4. #3  
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    One way to distinguish solar neutrinos from the terrestrial background is their direction. It is possible to derive the original path of each neutrino from the incident in the detectors. One result is a neutrino image of the sun at the following link.
    http://www.particlephysics.ac.uk/new...in-summer.html
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  5. #4  
    Geo
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    You'd think it would be "easy" to distinguish between geoneutrinos and solar neutrinos, as stated, by their incident paths. With the sun converting something on the order of 4 Mt of Hydrogen per second, and so few being detected, it seems unlikely the core/mantle U, Th and K decay would produce anything detectable.
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