  The isotope $^{83}$Kr$^m$, a 1.8-hr isomer of stable $^{83}$Kr, has become a
standard for the calibration of tritium beta decay experiments to determine
neutrino mass. It is also widely used as a low-energy electron source for the
calibration of dark-matter experiments. The nominally monoenergetic internal
conversion lines are accompanied by shakeup and shakeoff satellites that modify
the line shape. We draw on theoretical and experimental information to derive a
quantitative description of the satellite spectrum of the K-conversion line.
