Isovector Giant Dipole Resonance of Stable Nuclei in a Consistent Relativistic Random-phase Approximation

2003 ◽  
Vol 20 (9) ◽  
pp. 1459-1461 ◽  
Author(s):  
Cao Li-Gang ◽  
Ma Zhong-Yu
Keyword(s):  
Giant Dipole Resonance ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation ◽  
Dipole Resonance

E1 STRENGTH IN LIGHT NUCLEI: SKYRME RPA ANALYSIS

2012 ◽  
Vol 21 (05) ◽  
pp. 1250041 ◽  
Author(s):  
J. KVASIL ◽  
A. REPKO ◽  
V. O. NESTERENKO ◽  
W. KLEINIG ◽  
P.-G. REINHARD
Keyword(s):  
Random Phase Approximation ◽  
Random Phase ◽  
Light Nuclei ◽  
Strong Impact ◽  
Phase Approximation ◽  
Experiment Data ◽  
Dipole Strength ◽  
Dipole Resonance ◽  
Double Folding ◽  
Acceptable Agreement

The giant dipole resonance (GDR) in N = 28 isotones (48 Ca , 50 Ti , 52 Cr , 54 Fe ) is analyzed in the framework of the Skyrme random-phase-approximation (RPA). Three Skyrme forces, SkM*, SLy6 and SV-bas, are used. The effects beyond RPA are simulated by the double folding procedure. We show that dipole strength exhibits a large collective shift, which testifies to a strong impact of the residual interaction and signals on considerable anharmonic effects. In 52 Cr , a significant pairing impact is found. For exception of 50 Ti , an acceptable agreement with the experiment data is obtained, which justifies the ability of Skyrme forces to describe GDR in light nuclei.

scholarly journals GIANT DIPOLE RESONANCE IN DEFORMED NUCLEI: DEPENDENCE ON SKYRME FORCES

2007 ◽  
Vol 16 (02) ◽  
pp. 624-633 ◽  
Author(s):  
V. O. NESTERENKO ◽  
W. KLEINIG ◽  
J. KVASIL ◽  
P. VESELY ◽  
P.-G. REINHARD
Keyword(s):  
Giant Dipole Resonance ◽  
Random Phase Approximation ◽  
Random Phase ◽  
The Self ◽  
Dipole Strength ◽  
Deformed Nuclei ◽  
Effective Masses ◽  
Dipole Resonance ◽  
Self Consistent ◽  
Basic Characteristics

The giant dipole resonance (GDR) in deformed nuclei is analyzed using the self-consistent separable random-phase-approximation (SRPA) with Skyrme forces SkT6, SkM*, SLy6 and SkI3. The deformed nuclei 150 Nd and 238 U are used as representative rare-earth and actinide samples. Dependences of the dipole strength distributions on some basic characteristics of the Skyrme functional and nuclear matter properties (isoscalar and isovector effective masses, time-odd contributions) are discussed. Particular attention is paid to the fragmentation structure of the GDR strength which is shown to depend sensitively to spin-orbit intruder states with large angular momentum.

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