μ- partial capture rates in 16O

Using the short pulses of a linac a measurement has been performed of partial μ^--capture rates in ¹⁶O leading to the O^- and 1^- bound excited states of ¹⁶N. The experimental O⁺-->O^- transition rate supports the assumption of a large mesonic exchange effect in the time part of the weak axial current. NUCLEAR REACTIONS Muon capture ¹⁶O(μ,ν)¹⁶N. Measured I_γ, Ge(Li) detector. Deduced partial capture rates. Mesonic exchange correction to capture rate calculations.