Inelastic collisions of negative muons and hadrons with metastable hydrogen atoms

We consider inelastic collisions of slow negative muons and hadrons on a hydrogen atom in metastable 2 s-state. The calculations were using both diabatic and adiabatic bases. It is shown that both approaches reproduce similar qualitative peculiarities of ionization and Coulomb capture for collisions between M- particle and metastable atom. Ionization and Coulomb capture cross sections exceed the corresponding values for ground state by more than one order of magnitude. Slowing-down and capture kinetic characteristics also depend on the presence of metastable atoms essentially. 23 refs.; 10 figs.; 2 tabs. (author)