  Precise measurement of $\gamma$-rays following ordinary (non-radiative)
capture of negative muons by natural Se, Kr, Cd and Sm, as well as isotopically
enriched $^{48}$Ti, $^{76}$Se, $^{82}$Kr, $^{106}$Cd and $^{150}$Sm targets was
performed by means of HPGe detectors. Energy and time distributions were
investigated and total life time of negative muon in different isotopes was
deduced. Detailed analysis of $\gamma$-lines intensity allows to extract
relative yield of several daughter nuclei and partial rates of ($\mu$,$\nu$)
capture to numerous excited levels of the $^{48}$Sc, $^{76}$As, $^{82}$Br,
$^{106}$Ag and $^{150}$Tc isotopes which are considered to be virtual states of
an intermediate odd-odd nucleus in 2$\beta$-decay of $^{48}$Ca, $^{76}$Ge,
$^{82}$Se, $^{106}$Cd and $^{150}$Nd, respectively. These rates are important
as an experimental input for the theoretical calculation of the nuclear matrix
elements of 2$\beta$-decay.
