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The photofission cross section of Au was determined in the energy range 100 -300 MeV by means of a quasimonochromatic photon beam. The nuclear fissility Pf was calculated using the recently measured total photoabsorption cross sections. The nuclear excitation energy E*, charge and mass of compound nucleus were obtained by means of an intranuclear cascade Monte Carlo calculation. The fissility values determined for Au, Bi, and U were compared with the predictions of the cascade-evaporation model and remarkably fitted by the calculation.

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