Whence the odd-even staggering in nuclear binding?

Details Whence the odd-even staggering in nuclear binding? Whence the odd-even staggering in nuclear binding?

2008-12-10

arxiv.org/abs/0812.2006v1

Eur.Phys.J.A41:109-113,2009

Physics

Nuclear Physics

Nuclear Theory

5 pages, 3 tables

Scientific paper

10.1140/epja/i2009-10773-x

We explore the systematics of odd-even mass staggering with a view to identifying the physical mechanisms responsible. The BCS pairing and mean field contributions have A- and number parity dependencies which can help disentangle the different contributions. This motivates the two-term parametrization c_1 + c_2/A as a theoretically based alternative to the inverse power form traditionally used to fit odd-even mass differences. Assuming that the A-dependence of the BCS pairing is weak, we find that mean-field contributions are dominant below mass number A~40 while BCS pairing dominates in heavier nuclei.

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