- 8 11 To Determine The Mass Of The Electron Neutrino From The Beta Decay Of Tri Tium Requires Measurements Of The Electr 1 (132.98 KiB) Viewed 104 times
8.11 To determine the mass of the electron neutrino from the beta decay of tri- tium requires measurements of the electron energy spectrum very close to the endpoint, where there is a paucit of events (see Figure 8.12). Obtain a rough estimate of the fraction of electrons with kinetic energies within 5 eV of the endpoint by ignoring the Fermi screening factor and approximating the spectrum as a function of kinetic energy T by dw/dT = T1/2(T. - T')2, where To is the endpoint. You may assume the integral - | 31/2(e – «)’da !/2c3 E <a a-6