1 What is the energy of the neutrinos from electron capture

1. What is the energy of the neutrino(s) from electron capture transformation of 55Fe? What energy distribution do these neutrinos have?

Solution

⁵⁵Fe + e^- ---à ⁵⁵Mn + n

Mass of Mn – 55 = 54.938049 u

Mass of Fe-55 = 54.938298 u

Q value of the reaction = (54.938298 – 54.938049)* 931.494 Mev

                                     = 0.231942006 Mev.

The energy distribution varies from 0 to 0.232 Mev