Question

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

Answer 1

$p^{32}\to {\text{S}}^{32}+1_v^0{+}_{-1}{\beta }^0$

$\text{Energy of antineutrino and}\beta -\text{particle}$

$=(31.974-31.972)u$

$=0.002u$

$=0.002\times 931=11.862\text{MeV}$