Geometry and dynamics of a zero-temperature, Fermi-gas model for preequilibrium emission of nucleons, with application to 16O + 93Nb at ELab = 204 MeV: K. T. R. Davies, Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830; B. Remaud, Institut de Physique, Université de Nantes, 44072 Cedex, France; M. Strayer, Department of Physics, Yale University, New Haven, Connecticut 06520 and Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830; K. R. Sandya-Devi, Department of Physics, University of Arizona, Tucson, Arizona 85721; and Y. Raffray, Institut de Physique, Université de Nantes, 44072 Cedex, France