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词汇 solar neutrino unit
释义

Definition of solar neutrino unit in English:

solar neutrino unit

noun
Astronomy
  • 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 sentencesExamples
    • The GALLEX experimenters report observation of 83 19 8 SNU (solar neutrino units, the standard measure of solar neutrino flux) while standard astrophysical models of the fusion processes in the sun would predict about 128 SNU.
    • The standard solar model predicts that a gallium detector should pick up between 125 and 132 solar neutrino units for all neutrinos from the various reactions that can occur in the Sun.
    • This has shown neutrino rates that fluctuate around an average of 83 solar neutrino units.
    • The latest experimental results correspond to 1 SNU, whereas solar models yield values higher by one order of magnitude.
    • Neutrino astronomers often report their results in terms of solar neutrino units, or SNUs.

Definition of solar neutrino unit in US English:

solar neutrino unit

nounˌsōlər n(y)o͞oˈtrēnō ˌyo͞onət
Astronomy
  • 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 sentencesExamples
    • 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.
    • This has shown neutrino rates that fluctuate around an average of 83 solar neutrino units.
    • The GALLEX experimenters report observation of 83 19 8 SNU (solar neutrino units, the standard measure of solar neutrino flux) while standard astrophysical models of the fusion processes in the sun would predict about 128 SNU.
    • The standard solar model predicts that a gallium detector should pick up between 125 and 132 solar neutrino units for all neutrinos from the various reactions that can occur in the Sun.
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