Deformation and shell effects in nuclear mass formulas

Details Deformation and shell effects in nuclear mass formulas Deformation and shell effects in nuclear mass formulas

2011-08-30

arxiv.org/abs/1108.6098v1

Physics

Nuclear Physics

Nuclear Theory

21 pages, 8 figures, 10 tables

Scientific paper

We analyze the ability of the three different Liquid Drop Mass (LDM) formulas to describe nuclear masses for nuclei in various deformation regions. Separating the 2149 measured nuclear species in eight sets with similar quadrupole deformations, we show that the masses of prolate deformed nuclei are better described than those of spherical ones. In fact, the prolate deformed nuclei are fitted with an RMS smaller than 750 keV, while for spherical and semi-magic species the RMS is always larger than 2000 keV. These results are found to be independent of pairing. The macroscopic sector of the Duflo-Zuker (DZ) mass model reproduces shell effects, while most of the deformation dependence is lost and the RMS is larger than in any LDM. Adding to the LDM the microscopically motivated DZ master terms introduces the shell effects, allowing for a significant reduction in the RMS of the fit but still exhibiting a better description of prolate deformed nuclei. The inclusion of shell effects following the Interacting Boson Model's ideas produces similar results.

Affiliated with

Also associated with

No associations

Rating

Deformation and shell effects in nuclear mass formulas does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Deformation and shell effects in nuclear mass formulas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Deformation and shell effects in nuclear mass formulas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-624724