  The total cross sections of the processes 4He(gamma,p)3H and 4He(gamma,n)3He
are calculated. For these exclusive reactions we investigate the question of
the giant dipole peak height, but we also consider higher energies. The
calculation includes full Final State Interaction (FSI) via the Lorentz
Integral Transform (LIT) approach and employs the semi-realistic MTI-III
potential.
