Recent progress in the theory of fission of hot nuclei is reported. We discuss in particular the properties of the friction form factor as function of the deformation (and possibly of the temperature) which are necessary to reproduce data concerning fission of hot nuclei and its accompanying light particle and γ-ray emission. Recent theoretical work gives support to a phenomenological friction form factor (proposed some time ago [P. Fröbrich, I. I. Gontchar and N. D. Mavlitov, Nucl. Phys. A 556 (1993), 281]), which is weak for compact shapes and increases on the way to scission.
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A 2004 study studied this question.