arXiv:1001.1306v1 [nucl-th] 8 Jan 2010 This line only printed with preprint option 1 Fermi breakup and the Statistical Multifragmentation Model B.V. Carlson $^{1}$, R. Donangelo2 , $^{3}$, S.R. Souza2 , $^{4}$, W.G. Lynch $^{5}$, A.W. Steiner$^{5}$, and M.B. Tsang5 $^{1}$Departamento de Física, Instituto Tecnológico de Aeronáutica - CTA, 12228-900 São José dos Campos, Brazil $^{2}$Instituto de Física, Universidade Federal do Rio de Janeiro Cidade Universitária, CP 68528, 21941-972, Rio de Janeiro, Brazil 3 Instituto de Física, Facultad de Ingeniería Universidad de la República, Julio Herrera y Reissig 565, 11.300 Montevideo, Uruguay $^{4}$Instituto de Física, Universidade Federal do Rio Grande do Sul Av. Bento Gonçalves 9500, CP 15051, 91501-970, Porto Alegre, Brazil and 5 Joint Institute for Nuclear Astrophysics, National Superconducting Cyclotron Laboratory, and the Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA We demonstrate the close similarity of a generalized Fermi breakup model, in which densities of excited states are taken into account, to the microcanonical statistical multifragmentation model used to describe the desintegration of highly excited fragments of nuclear reactions. PACS numbers: 25.70.Pq, 24.60.k Abstract