A New Semiempirical Shell Correction to the Droplet Model
Gross Theory of Nuclear Magics

H. von Groote
Eberhard R. Hilf   Phone: +49-(0)441-798-2542   Fax: +49-(0)441-798-3201
K. Takahashi


Date: 1976

Article: published in Atomic Data and Nuclear Data Tables, Vol. 17, Nos. 5-6, p. 418-427, ( 1976 )

A new semiempirical atomic mass formula is presented. Special emphasis has been
put on a theoretical basis for the microscopic ( shell-correction ) part, which
is added to the macroscopic droplet-model expression. The latter includes the 
response to the surface diffuseness. The shell function, which is simple and
analytic, is derived by bunching the average single-particle spectrum of nuclei
with correct size according to the magic numbers. Shell effects from the inner
shells are taken care of. In addition, ideas of changing magicities along neutron
( proton ) magic isotone ( isotope ) chains, and of damping of the off-Fermi-energy-shell
contributions are introduced. These may be important for reliable extrapolations 
to very neutron-rich ( or neutron-deficient ) regions of the nuclear chart.

DC-Metatags done by WUFI 1.1
Metadata by Thomas Severiens on 12 April 1999
Supporting work done by Sandra Valeska Bergmann.