Correlation features of the reaction 9Be(d, pγ)10Be at Ed=15.3 MeV and structure of the 10Be nucleus

Mechanisms of sequential particle transfer and characteristics of light neutron-excess and oriented nuclei

“…For the reaction 9 Ве(d,p) 10 Be we calculated differ ential cross sections for the mechanisms of neutron stripping and sequential transfer of a neutron and dineutron, along with a total differential cross section defined as a coherent sum of the amplitudes of these two mechanisms. The optical potential parameters for d + 9 Be and p + 10 Be in the initial and final reaction channels somewhat differ from those which were used in [44,45]; they are presented in Table 2.…”

“…Analysis of the results of correlated measurements in the reac tion 9 Ве(d,p) 10 Be carried out in [44,45] showed high sensitivity of the characteristics to the structure of the wave functions and demonstrated necessity of accounting for the multistep reaction mechanisms. This conclusion drawn in [44,45] does not look sur prising, as it is the experiments on inelastic scattering of deuterons off nucleus 9 Be [10], where the effects, which can be interpreted as a manifestation of two step mechanisms, were for the first time discovered. Therefore, in the reaction 9 Ве(d,p) 10 Be we considered the additional mechanism of sequential neutron and dineutron (the quadrangle diagram shown in Fig.…”

Dynamic deformation of light nuclei in excited states

“…According to the above, surface (11) should be similar to (3) at θ y = 0°. The following relation should thus be valid for N k : (12) In addition to the parameter of static deformation, we must know the value of nucleus orientation tensor corresponding multipolar moment at particle angles of exit that are close to zero in order to calculate N k . (10) with the help of spin tensors of the den sity matrix that were recovered from the experiment using formulas (1), (2).…”

“…For example, Fig. 3 shows the populations of magnetic substates, several components of tensors A kκ (θ p ) [11], and the quadrupole moment orientation tensors for the 10 Ве(2 + ) nucleus [12] 1 2 20( ) 8. S P P ± ± = − + + 2 , j θ formed in the 9 Ве(d, p 1 ) 10 Ве(2 + ) reaction, along with theoretical curves calculated by CCM for different values of the static quadrupole deformation of the nucleus (both positive and negative).…”

“…IN THE 2 + STATE Along with the values of β k from the previous sec tion, the values of the orientation tensors corresponding to angles θ y = 0° allow us to calculate normalization constants (12), and finally dynamic deformation (11) of an oriented nucleus. Figure 4 shows the dependence of dynamic deforma tion on the scattering angle for the 12 С(2 + ) nucleus formed upon the inelastic scattering of α particles with the energies Е α = 30 MeV.…”