The mass table FRDM(1992) has an error of 0.669 MeV with respect to an interim 1989 mass evaluation with 1654 nuclei. We have now finalized a new mass table FRDM(2012) which has an error of 0.5595 MeV with respect to the 2149 nuclei in the AME2003 evaluation, to which its model constants were adjusted. There are several reasons for this improvement: 1) we optimize better the macroscopic model parameters, 2) we study the potential energy in a full four-dimensional deformation space. 3) we include the effect of axial asymmetry on the ground state energy 4) we have improved the calculation of ground-state zero-point energies, A brief summary of this work is in Ref. [1]. Locally substantial improvements were achieved, mainly in regions of shape coexistence. We have compared the 1992 and 2012 tables to the nuclei in the new trap measurements by [2] in such a region of shape coexistence. For the 1992 table the rms is 1.10 MeV, for the new table 0.38 MeV, for these nine nuclei. We also present the impact of the new mass table on r-process abundance calculations.

References

[1] P. Moller, W. D. Myers, H. Sagawa, and S. Yoshida, Phys. Rev. Lett. 108 (2012) 052501.

[2] E. Haettner, D. Ackermann, G. Audi, K. Blaum, M. Block, S. Eliseev, T. Fleckenstein, F. Herfurth, F. P. Hessberger, S. Hofmann, J. Ketelaer, J. Ketter, H.-J. Kluge, G. Marx, M. Mazzocco, Yu. N. Novikov, W. R. Plass, S. Rahaman, T. Rauscher, W. R. Rodriguez, H. Schatz, C. Scheidenberger, L. Schweikhard, B. Sun, P. G. Thirolf, G. Vorobjev, M. Wang, and C. Weber, Phys. Rev. Lett. 106 (2011) 122501.