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.

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.

NUCLEAR STRUCTURE ADDRESSED AT GSI/RISING

2009 ◽  
Vol 18 (04) ◽  
pp. 759-766 ◽  
Author(s):  
◽  
M. GÓRSKA ◽  
H. GRAWE ◽  
L. CACERES ◽  
A. ALGORA ◽  
...  
Keyword(s):  
Nuclear Structure ◽  
Large Scale ◽  
Radioactive Beams ◽  
Β Decay ◽  
Model Calculations ◽  
Wide Range ◽  
Rare Isotopes ◽  
Γ Ray ◽  
Spectroscopy Studies ◽  
Physical Phenomena

Nuclear structure spectroscopy studies at GSI recently gained increased momentum within a broad international community with the installation of the Rare Isotopes Spectroscopic INvestigation at GSI (RISING) project. A wide range of physical phenomena has been addressed by high-resolution in-beam γ-ray spectroscopy experiments with radioactive beams. Relativistic radioactive beams are implanted and their subsequent γ and β decay is investigated. Within this "stopped beam campaign" germanium detectors were arranged in a close geometry around the passive stopper or an array of DSSSD detectors. The exceptionally high γ-ray efficiency of that configuration made it possible to identify decays of excited or ground states of nuclei which have not been observed before. The results discussed here include the astrophysically relevant shell structure of N =82 isotones, N = Z nuclei around 54 Ni , and proton drip-line nuclei below 100 Sn . The experimental data are compared to the results of large scale shell-model calculations using various sets of realistic residual two-body interaction.

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

Shell structure in empirical p-n interactions: comparison with Nilsson and shell model calculations

1991 ◽  
Vol 255 (4) ◽  
pp. 487-492 ◽  
Author(s):  
W.-T. Chou ◽  
J.-Y. Zhang ◽  
R.F. Casten ◽  
D.S. Brenner
Keyword(s):  
Shell Model ◽  
Shell Structure ◽  
Model Calculations

FIRST γ-RAY SPECTROSCOPY AND ISOSPIN SYMMETRY STUDY OF THE N = Z - 2 NUCLEUS 44V

2010 ◽  
Vol 25 (21n23) ◽  
pp. 2028-2029 ◽  
Author(s):  
M. J. TAYLOR ◽  
M. A. BENTLEY ◽  
J. BROWN ◽  
R. WADSWORTH ◽  
P.E. KENT ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Shell Model ◽  
Excited States ◽  
State Of The Art ◽  
Isospin Symmetry ◽  
Charge Symmetry Breaking ◽  
Charge Symmetry ◽  
Model Calculations ◽  
Γ Ray ◽  
First Time

Excited states in the Tz = -1 nucleus 44 V have been observed for the first time. The states have been identified through recoil-γ-γ coincidences and comparison with analogue states in the mirror nucleus 44 Sc . Mirror energy differences have been extracted and compared to state-of-the-art fp shell-model calculations which include charge symmetry breaking forces.

scholarly journals Shell Model calculations of nuclear structure in ʺIsland of inversionʺ N=20 region: 32-36Mg isotopes

2021 ◽  
Vol 67 (5 Sep-Oct) ◽  
Author(s):  
Firas Abed Ahmed
Keyword(s):  
Shell Model ◽  
Nuclear Structure ◽  
Transition Probabilities ◽  
Model Calculations ◽  
Island Of Inversion

The intruder configurations (1p-1h), (2p-2h) and (3p-3h) were studied in this work for the island of inversion within the SDPF-U Hamiltonian. The effect of the proton locations on the structure (energies and transition probabilities) for even-even and even-odd magnesium (N=20-24) isotopes is studied.

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