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We employ density-dependent relativistic mean-field theory to study how thetriaxiality and pairing interaction affect the inner fission barriers ofactinide nuclei. It was found that triaxiality reduced the inner fissionbarriers and improved agreement with experimental values for many actinides.However, about 1-2 MeV discrepancy to the experimental values still remainedfor some of the considered nuclei. Such a discrepancy could be made furthersmaller by increasing the BCS pairing strength parameter. In this work, wedemonstrated that adjusting the paring strength was effective to reproduce theexperimental inner fission barriers as well as "pairing rotational energy" andbinding energy in a consistent manner for nuclei where the effect of thetriaxiality on the inner fission barriers was significant.

Effects of triaxiality and pairing interaction on fission barriers of actinide nuclei studied by density-dependence relativistic mean-field theory