The temperature dependence of the fission barrier in a mean-field description of rotating nuclei

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Abstract
The authors continue their studies of the angular momentum and temperature dependence of the symmetric fission barrier of the model 144Nd nucleus in the Hartree-Fock approximation. They find that the fission barrier is reduced in hot nuclei but, unlike angular momentum, temperature does not shift the position of the saddle-point. Temperature effects reduce the critical angular momentum for fission. They estimate that the critical angular momentum is half its zero-temperature value at kT approximately 4 MeV and that the fission barrier vanishes in the absence of rotation at kT approximately 8 MeV.