On dipole compression modes in nuclei

Preprint

20 March 2000

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.nucl-th/0003042

Abstract

Isoscalar dipole strength distributions in spherical medium- and heavy-mass nuclei are calculated within random phase approximation (RPA) or quasiparticle RPA. Different Skyrme-type interactions corresponding to incompressibilities in the range 200 - 250 MeV are used. The results are discussed in comparison with existing data on isoscalar giant dipole resonances. Two main issues are raised, firstly the calculated giant resonance energies are somewhat higher than the observed ones, and secondly a sizable fraction of strength is predicted below 20 MeV which needs to be experimentally confirmed.

Keywords

STRENGTH DISTRIBUTIONS
DIPOLE COMPRESSION
COMPRESSION MODES
ISOSCALAR DIPOLE
SPHERICAL MEDIUM
NUCLEI ISOSCALAR
DIPOLE STRENGTH
RPA

All Related Versions

Version 1, 2000-03-20, ArXiv
Published version: Physics Letters B, 485 (4), 362.

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