A. S. Bazhin and V. V. Samarin
The energy and the squared modulus of the wave function of the ground state of the 9Be nucleus as a system of two alpha-clusters and an outer neutron were calculated using hyperspherical functions. A system of hyperradial equations was solved using cubic splines. The charge distribution and the root-mean-square charge radius for the 9Be nucleus were calculated and were found to agree with the experimental data.