  Using simulated data, obtained with the FLUKA code, we derive empirical
regularities about the propagation and stopping of low-energy negative muons in
hydrogen and selected solid materials. The results are intended to help the
preliminary stages of the set-up design for experimental studies of muon
capture and muonic atom spectroscopy. Provided are approximate expressions for
the parameters of the the momentum, spatial and angular distribution of the
propagating muons. In comparison with the available data on the stopping power
and range of muons (with which they agree in the considered energy range) these
results have the advantage to also describe the statistical spread of the muon
characteristics of interest.
