Question

³²P beta-decays to ³²S. Find the sum of the energy of the antineutrino and the kinetic energy of the β-particle. Neglect the recoil of the daughter nucleus. Atomic mass of ³²P = 31.974 u and that of ³²S = 31.972 u.

Answer 1

Energy of antineutrino and β-particle

= (31.974 – 31.972)u = 0.002 u = 0.002 x 931 = 1.862 MeV = 1.86.