Photodisintegration of Helium

The electric dipole bremsstrahlung-weighted cross section ${\ensuremath{\sigma}}_{b}$ and integrated cross section ${\ensuremath{\sigma}}_{\mathrm{int}}$ for the photodisintegration of helium have been calculated using the modified Irving wave function. Good agreement has been obtained with the current experimental values: ${\ensuremath{\sigma}}_{b}=2.4\ifmmode\pm\else\textpm\fi{}0.15$ mb and ${\ensuremath{\sigma}}_{\mathrm{int}}=95\ifmmode\pm\else\textpm\fi{}7$ MeV mb. The results have also been compared with the recent calculations of Goldhammer and Valk.