  The Li7 total photoabsorption cross section is calculated microscopically. As
nucleon-nucleon interaction the semi-realistic central AV4' potential with S-
and P-wave forces is taken. The interaction of the final 7-nucleon system is
fully taken into account via the Lorentz Integral Transform (LIT) method. For
the calculation of the LIT we use expansions in hyperspherical harmonics (HH)
in conjunction with the HH effective interaction (EIHH) approach. The
convergence of the LIT expansion is discussed in detail. The calculated cross
section agrees quite well with the available experimental data, which cover an
energy range from threshold up to 100 MeV.
