Inelastic p9Be scattering and halo-structure of excited states of 9Be

The calculation of the differential cross-section of inelastic p9Be scattering (to the levels Jπ=1/2+Jπ=1/2+, 3/2+3/2+) was made in the framework of the Glauber diffraction theory. We have used the wave function of 9Be in the ground and excited states in the three-body 2αn2αn model. Expansion in series by gaussoids of the wave function of 9Be and presentation of the Glauber's operator Ω in the form, conjugated with three-body wave function make it possible for us to analytically calculate the matrix elements of inelastic scattering, taking into account all of the multiplicities of scattering and rescattering on clusters and nucleons, which are components of 9Be. The drawn-up profiles of probability densities of excited state functions allow us to form conclusions on their extended neutron distribution. The differential cross-section with the wave function in model 1 (with the αα  -Ali–Bodmer potential) is in good agreement with available experimental data at E=180 MeVE=180 MeV.