Study of the ReactionsF19(α, t)Ne20at 18.5 MeV andF19(He3, d)Ne20at 13.0 MeV

Angular distributions from the ${\mathrm{F}}^{19}(\alpha , t){\mathrm{Ne}}^{20}$ and ${\mathrm{F}}^{19}({\mathrm{He}}^3, d){\mathrm{Ne}}^{20}$ reactions have been measured for the particle groups leaving ${\mathrm{Ne}}^{20}$ in its ground state and in its first excited state at 1.63 MeV. A direct interaction mechanism was indicated by the forward peaking and the oscillatory structure of all angular distributions. Butler's stripping theory was applied to the (${\mathrm{He}}^3$, $d$) data and the reduced widths obtained were compared with corresponding ${\mathrm{F}}^{19}(d, n){\mathrm{Ne}}^{20}$ data. From comparison of the (${\mathrm{He}}^3$, $d$) and the ($\alpha , t$) cross sections it is suggested that the ${\mathrm{F}}^{19}(\alpha , t){\mathrm{Ne}}^{20}$ reaction does not proceed by a stripping mechanism.