  Radioactive sources of the monoenergetic low-energy conversion electrons from
the decay of isomeric $^{83m}Kr$ are frequently used in the systematic
measurements, particularly in the neutrino mass and dark matter experiments.
For this purpose, the isomer is obtained by the decay of its parent
radionuclide $^{83}Rb$. In order to get more precise data on the gamma-rays
occuring in the $^{83}Rb$/$^{83m}Kr$ chain, we re-measured the relevant
gamma-ray spectra, because the previous measurement took place in 1976. The
obtained intensities are in fair agreement with this previous measurement. We
have, however, improved the uncertainties by a factor of 4.3, identified a new
gamma transition and determined more precisely energies of weaker gamma
transitions.
