Investigation of β decay ofCd113

\ensuremath{\beta} decay of $^{113}\mathrm{Cd}$ was studied with the help of a low background CdWO${}_{4}$ crystal scintillator (mass of 434 g) in an experiment at the Gran Sasso National Laboratories of the INFN for a period of 2758 h. The shape of the spectrum of the non-unique fourth-forbidden decay of $^{113}\mathrm{Cd}$ was measured, and the half-life of $^{113}\mathrm{Cd}$ was determined as ${T}_{1/2}=(8.04\ifmmode\pm\else\textpm\fi{}0.05)\ifmmode\times\else\texttimes\fi{}{10}^{15}$ yr.