  We study $(n,d)$ and (d,$^3$He) reactions on $^{208}Pb$ leading to deeply
bound pionic atoms with one neutron hole being left. We develop a theoretical
model to calculate cross sections of deeply bound pionic atoms and
quasi-elastic pion production. The results are compared with data which have
been obtained so far. We show that the theoretical model describes the data of
both reactions well.
