Further explorations of Skyrme-Hartree-Fock-Bogoliubov mass formulas. VII. Simultaneous fits to masses and fission barriers

We present a new Hartree-Fock-Bogoliubov mass model, HFB-14, that is fitted to the fission data through adjustment of a vibrational term in the phenomenological collective correction. The rms deviation of the model from the 2149 measured masses of nuclei with Z,N8 is 0.729 MeV. The rms deviation for all 77 primary barriers listed in the RIPL-2 data compilation is 1.31 MeV, and only 0.67 MeV for the 52 primary barriers of nuclei lower than 9 MeV, the ones of greater astrophysical interest. A similar accuracy is obtained (0.65 MeV) for the 45 secondary experimental barriers necessary for a reliable calculation of fission probabilities.