Definition of solar neutrino unit in English:

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solar neutrino unit

Pronunciation: /ˌsōlər n(y)o͞oˈtrēnō ˌyo͞onət/

Entry from US English dictionary

(abbreviation SNU)


A unit used in expressing the detected flux of neutrinos from the sun, equal to 10−36 neutrino captures per target atom per second.
Example sentences
  • This has shown neutrino rates that fluctuate around an average of 83 solar neutrino units.
  • Neutrino astronomers often report their results in terms of solar neutrino units, or SNUs.
  • The latest experimental results correspond to 1 SNU, whereas solar models yield values higher by one order of magnitude.
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