FUSION IN-FLIGHT FROM THE MOLECULAR CONTINUUM OF DT-MU

Fusion reaction rates for the muonic molecular system dtmu are calcula ted in the scattering continuum above the first break-up threshold (tm u)1s + d, and for a few of the resonant states there embedded. In orde r to analyze the fusion in flight reaction (tmu) + d, the molecular wa ve function is obtained within (a) semiclassical, (b) adiabatic, and ( c) nonadiabatic descriptions, in the energy range 0.002-10 keV. The se miclassical rates are higher than the corresponding adiabatic fusion r ates, but converge towards the latter for high collision energies. In the nonadiabatic treatment, the qualitatively new structure has been o btained. The fusion rate shows an oscillatory behaviour, associated wi th the presence of a series of virtual states and variations of the ov erbarrier transmission in the tmu + d potential scattering. Furthermor e, the nonadiabatic fusion rates are substantially enhanced at resonan t energies near the tmu2s threshold.