ESTIMATION OF THE INACCURACY OF CALCULATED MASSES AND FISSION-BARRIER HEIGHTS OF HEAVY NUCLEI

The inaccuracy of calculated masses M and (static) fission-barrier height of heaviest nuclei is estimated. The estimation is performed within a macroscopic-microscopic approach for two nuclei: a heavy nucleus 250Cf and a superheavy one 294118. The source of the inaccuracy is the inaccuracy of calculated deformation of a nucleus and of calculated pairing-interaction strength. It is shown that the inaccuracy of the ground-state mass M, due to the inaccuracy of the calculated deformation is small, up to about 20 keV. The inaccuracy of M, due to the inaccuracy of the pairing strength is much larger, up to 310 keV. The inaccuracy of , due to the inaccuracy of the deformation is up to about 70 keV, while this due to the inaccuracy of the pairing strength is up to 520 keV. For both studied nuclei, the calculated inaccuracy of is smaller than the discrepancy between the values of obtained recently within different macroscopic-microscopic models.