The charge-symmetric pseudo nucleus pdμ can be formed in the cascade
process in the muon catalyzed fusion. The nuclear fusion of the pdμ molecular
ion can be considered in the photon field. For the spin states of the pdμ system
(L = 0), the radiative fusion rates are calculated employing a new spatial
wavefunction. The method takes into account the Coulomb interactions for
the calculation of the molecular wavefunction. The related pd astrophysical
factors are used, essentially extracted from experimental determinations.