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## Homework Statement

Hi everyone,

So I am asked to detect the number of neutrino events that occur from them entering 3000 metric tonnes of pure water. I am given that t=10s , E(neutrino)=10MeV and that the electron cross section is 10^-47 m^2 . This was the famous neutrino experiment at Kamiokande for the explosion of SN 1987a. I also know the neutrino flux on earth due to this event ~ 4x10^13 s^-1m^-2.

Any help starting off this problem is appreciated!

## Homework Equations

## The Attempt at a Solution

I know I need to find the rate at which electrons are scattered by neutrino collisions in the water . So the reaction is just ν+e

^{-}→v+e

^{-}.

I'm guessing that the number of events E detected will be E = collisional frequency * elapsed time

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