Droplet Model of the Giant Dipole Resonance

W. D. Myers
W. J. Swiatecki
T. Kodama
L. J. El-Jaick
Eberhard R. Hilf   Phone: +49-(0)441-798-2542   Fax: +49-(0)441-798-3201

ebs.droplet.model.pdf (Published)
ebs.droplet.model.prep.pdf (Preprint)

Date: 19761207

Article: published in Physical Review C, Vol. 15, No. 6, p. 2032-2043, ( 1977 )

Nuclear reactions. Semiclassical theory, nuclear giant dipole resonance, calculated sigma(E), Gamma. Droplet model restoring forces. Coupled modes.

The nuclear giant dipole resonance is discussed using a macroscopic model
with two new features. The motion is treated as a combination of the usual
Goldhaber-Teller displacement mode and the Steinwedel-Jensen acoustic mode,
and the restoring forces are all calculated using the droplet model. The A
dependence of the resonance energies is well reproduced without any adjustable
parameters, and the actual magnitude of the energies serves to fix the value
of the effective mass m* used in the theory. The giant dipole resonance is
found to contain a large component of the Goldhaber-Teller type of motion,
with the Steinwedel-Jensen mode becoming comparable for heavy nuclei. The 
width Gamma of the giant dipole resonance is estimated on the basis of an 
expression for one-body damping.

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