Abstract: | Studies via the 16O(3He, pγ)18F, 14N(α,γ)18F and 17O(p, γ)18F reactions have resulted in new Jπ assignments for 11 states or negative parity: Ex(keV) (Jπ) = 3791(3?), 4226(2(?)), 4398(4?), 4860(1(?)), 5502(3(?)), 5785(2?), 6097(4?), 6108(1(?), 2(?), 3(?)), 6241(3?, T = 1), 6643(2?, T = 1) and 6878(3(t-), 4?). The 6241 keV state is probably isospin mixed. New information for 5 states of positive parity has also been obtained: Ex(keV) (Jπ) = 3838(2+), 4115(3+), 4652(4+, T = 1), 4753((0+), T = 1) and 4964(2+, T = 1). Mean lives, branching and mixing ratios are reported for all states. The results for the negative-parity states are discussed in the framework of the various models available. The states at Ex = 1080(0?), 2100(2?) and 4398(4?) keV are interpreted as the first three members of a Kπ = 0? rotational band. |