FIRST USE OF POST-ACCELERATED ISOMERIC BEAMS FOR COULOMB EXCITATION STUDIES OF ODD-ODD NUCLEI AROUND N=40

2006 ◽  
Vol 15 (07) ◽  
pp. 1505-1512 ◽  
Author(s):  
◽  
G. GEORGIEV ◽  
I. STEFANESCU ◽  
D. L. BALABANSKI ◽  
P. BUTLER ◽  
...  
Keyword(s):  
Shell Model ◽  
Nuclear Structure ◽  
Large Scale ◽  
Coulomb Excitation ◽  
Model Calculations ◽  
Preliminary Results ◽  
Γ Rays ◽  
Isomeric States

We report on the first use of post-accelerated radioactive isomeric beams. Long-lived isomeric states in 68 Cu and 70 Cu have been produced and separated at ISOLDE, CERN. Subsequently they were post-accelerated to 2.86 MeV/u and sent to a target in the center of the MINIBALL spectrometer, used for the detection of the γ-rays of interest. The preliminary results from the Coulomb excitation of the Iπ=6-, 1+ states in 68 Cu and the Iπ=6- one in 70 Cu , compared to a large-scale shell model calculations, hint the importance of the excitations across the Z=28 gap for the understanding of the nuclear structure in the neutron-rich N=40 region.

scholarly journals Emerging nuclear collectivity in 124−130Te

2020 ◽  
Vol 232 ◽  
pp. 04003
Author(s):  
B. J. Coombes ◽  
A. E. Stuchbery ◽  
J. M. Allmond ◽  
A. Gargano ◽  
J. T. H. Dowie ◽  
...  
Keyword(s):  
Shell Model ◽  
Large Scale ◽  
Coulomb Excitation ◽  
Model Calculations ◽  
G Factors

The emergence of nuclear collectivity near doubly-magic 132Sn was explored along the stable, eveneven 124−130Te isotopes. Preliminary measurements of the B(E2; 41+ → 21+) transition strengths are reported from Coulomb excitation experiments primarily aimed at measuring the g factors of the 41+ states. Isotopically enriched Te targets were excited by 198-205 MeV 58Ni beams. A comparison of transition strengths obtained is made to large-scale shell-model calculations with successes and limitations discussed.

SHELL STRUCTURE, COLLECTIVITY AND NUCLEAR SHAPES — RISING IN-BEAM EXPERIMENTS AT RELATIVISTIC ENERGIES

2006 ◽  
Vol 15 (07) ◽  
pp. 1495-1503
Author(s):  
◽  
PIETER DOORNENBAL
Keyword(s):  
High Resolution ◽  
Shell Model ◽  
Nuclear Structure ◽  
Shell Structure ◽  
Mirror Symmetry ◽  
Coulomb Excitation ◽  
Radioactive Beams ◽  
Model Calculations ◽  
Electromagnetic Transition ◽  
Γ Ray

The RISING fast beam campaign aims at high resolution γ-ray spectroscopy experiments with relativistic radioactive beams at GSI. The secondary beams produced by fragmentation or fission are used for Coulomb excitation or secondary fragmentation experiments to perform studies of nuclei far off stability. The physics phenomena studied with this method include nuclear structure experiments targeting at the evolution of shell structure toward the drip lines, mirror symmetry, collectivity and electromagnetic transition strengths. Example results of this fast beam campaign are presented and compared to various shell model calculations and nuclear structure models.

scholarly journals Study of nuclei around Z = 28 by large-scale shell model calculations

2013 ◽  
Vol 445 ◽  
pp. 012028 ◽  
Author(s):  
Y Tsunoda ◽  
T Otsuka ◽  
N Shimizu ◽  
M Honma ◽  
Y Utsuno
Keyword(s):  
Shell Model ◽  
Large Scale ◽  
Model Calculations

scholarly journals Large Scale Shell Model Calculations of the Negative-Parity States Structure in 24Mg Nucleus

2021 ◽  
Vol 66 (4) ◽  
pp. 293
Author(s):  
A.A. Al-Sammarraie ◽  
F.A. Ahmed ◽  
A.A. Okhunov
Keyword(s):  
Shell Model ◽  
Large Scale ◽  
Transition Probabilities ◽  
Transition Probability ◽  
Energy Levels ◽  
Form Factors ◽  
Model Space ◽  
Negative Parity ◽  
Matrix Elements ◽  
Model Calculations

The negative-parity states of 24Mg nucleus are investigated within the shell model. We are based on the calculations of energy levels, total squared form factors, and transition probability using the p-sd-pf (PSDPF) Hamiltonian in a large model space (0 + 1) hW. The comparison between the experimental and theoretical states showed a good agreement within a truncated model space. The PSDPF-based calculations successfully reproduced the data on the total squared form factors and transition probabilities of the negative-parity states in 24Mg nucleus. These quantities depend on the one-body density matrix elements that are obtained from the PSDPF Hamiltonian. The wave functions of radial one-particle matrix elements calculated with the harmonic-oscillator potential are suitable to predict experimental data by changing the center-of-mass corrections.

scholarly journals Nuclear structure of Ge76 from inelastic neutron scattering measurements and shell model calculations

2017 ◽  
Vol 95 (1) ◽  
Author(s):  
S. Mukhopadhyay ◽  
B. P. Crider ◽  
B. A. Brown ◽  
S. F. Ashley ◽  
A. Chakraborty ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Shell Model ◽  
Nuclear Structure ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Model Calculations ◽  
Scattering Measurements
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