An experiment on the scattering of 23 MeV deuterons by 9 Be nucleus was carried out. Differential scattering cross sections are obtained for the following states:

The differential cross sections of the 12 C( 3 He,t) 12 N reaction leading to formation of the 1 + (ground state), 2 + (0.96 MeV), 2 − (1.19 MeV), and 1 − (1.80 MeV) states of 12 N are measured at E( 3 He)=40 MeV. The analysis of the data is carried out within the modified diffraction model (MDM) and distorted wave Born approximation (DWBA). Enhanced rms radii were obtained for the ground, 2 − (1.19 MeV), and 1 − (1.80 MeV) states. We revealed that 12 B, 12 N, and 12 C in the IAS with T=1, and spin-parities 2 − and 1 − have increased radii and exhibit properties of neutron and proton halo states.

The analysis of the available data on the α + 9Be elastic scattering in range from 18.4 to 104 MeV, including recent measurements at energies of 40 and carried out. The experimental data on elastic scattering were analyzed within the of the optical model using Woods-Saxon potential and the double folding one.

Experimental data on inelastic +

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