Prompt emission of fast nucleons in heavy ion collisions

The prompt emission of fast nucleons resulting from the Fermi motion of nucleons in nuclei is investigated in Time-Dependent Hartree-Fock theory. The identification and demonstration of the fast nucleons (Fermi jet) is facilitated by plotting the Wigner function in phase-space. The calculations are made in one-dimensional slab-geometry. The number of nucleons in the jet varies with beam energy and with the target-projectile asymmetry. A larger asymmetry (smaller projectile) gives more nucleons. A beam of Esub(lab)/A=24 MeV gives a maximum number of them. (author)