  We realize a combined trap for bosonic chromium 52Cr and rubidium 87Rb atoms.
First experiments focus on exploring a suitable loading scheme for the combined
trap and on studies of new trap loss mechanisms originating from simultaneous
trapping of two species. By comparing the trap loss from the 87Rb
magneto-optical trap (MOT) in absence and presence of magnetically trapped
ground state 52Cr atoms we determine the scattering cross section of
sigma_{inelRbCr}=(5.0+-4.0)*10^{-18}m^2 for light induced inelastic collisions
between the two species. Studying the trap loss from the Rb magneto-optical
trap induced by the Cr cooling-laser light, the photoionization cross section
of the excited 5P_{3/2} state at an ionizing wavelength of 426nm is measured to
be sigma_{p}=(1.1+-0.3)*10^{-21}m^2.
