L'effet de réorientation dans le premier état excité du 46Ti et Du 48Ti

The first 2 ⁺ states in ^46,48Ti were excited using a beam of ¹⁶O at energies below the Coulomb barrier. The data were interpreted in terms of the semiclassical theory of the Coulomb excitation and the analysis with a coupled-channel computer code yields the values of the reduced transition probabilities if B(E2;0 ₁⁺ → 2 ₁⁺) = 0.097 ±0.007 e²·b ² and 0.072± 0.004 e²·b ², for the ⁴⁶Ti and ⁴⁸Ti, respectively. The static quadrupole moments of the first excited states were also extracted from the data and the values obtained are Q(su46 Ti, 0.889 MeV) = -0.28 ± 0.14 e · b and Q( ⁴⁸Ti, 0.983 MeV) = -0.38 ± 0.3 e · b, neglecting the effects of higher excited states. These results are compared with recent theoretical calculations and with the values obtained by Häusser et al. The agreement with these experimental results is satisfactory.