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HK: Physik der Hadronen und Kerne
HK 3: Nuclear Physics / Spectroscopy I
HK 3.7: Talk
Monday, March 11, 2002, 18:30–18:45, B
Simple Parametrization of neutron separation energies in terms of the neutron to proton ratio N/Z* — •K. Vogt, T. Hartmann, and A. Zilges — Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
It is shown that single- and two-nucleon
separation energies can be parametrized in a new way
using the neutron to proton
ratio N/Z and the mass number A.
Very simple empirical formulas have been achieved
using a least squares fit to all available experimental data [1].
It is demonstrated that the observed N/Z dependence can be derived from
the Fermi Gas model.
For an estimate of the usefulness of these formulas,
the resulting neutron separation energies are compared to results from
several mass formulas currently in use [2,3].
As an outlook, possible practical
applications are discussed.
* supported by the DFG (contract Zi 510/2-1 and FOR 272/2-1).
[1] K. Vogt, T. Hartmann, A. Zilges, Phys. Lett. B517 (2001)
[2] P. Möller, J. R. Nix, W. D. Myers, and W. J. Swiatecki, At. Data Nucl. Data Tables, 59, 185 (1995)
[3] F. Tondeur, S. Goriely, J. M. Pearson, and M. Onsi, Phys. Rev. C 62, 024308 (2000)