Calculate the detection rate for neutrino scattering, in events per day, if 10−6 of the solar neutrinos have a high enough energy to be detected by this experiment, and each electron poses a scattering cross section σ = 10−43 cm2.

  1. Calculate the detection rate for neutrino scattering, in events per day, if 10−6 of the
    solar neutrinos have a high enough energy to be detected by this experiment, and
    each electron poses a scattering cross section σ = 10−43 cm2.
    Hint: Consider the density of neutrino targets “seen” by an individual electron, with
    a relative velocity of c between the neutrinos and the electron, to obtain the rate at
    which one electron interacts with the incoming neutrinos, and multiply by the total
    number of electrons, from (a), to obtain the rate in the entire detector.
    Answers: 1.6 × 1034 electrons; 9 events per day.
 

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