  We present a study of two-photon electron capture by H-like uranium ions. The
energy of the incident electron was chosen to be in the region with the most
significant contribution of the dielectric recombination. We studied the photon
emission spectrum, including the main resonance groups corresponding to the
cascade transition, and the low-energy photon region, where the infrared
divergence required special processing. The calculations were performed within
the framework of QED theory. The importance of generalized Breit interaction
was discussed. We investigated the roles of the dielectric recombination and
the radiative recombination. We introduced and investigated the resonance
approximation and the single-photon approximation, which are commonly used to
describe radiation spectra.
