scholarly journals Predominance of Triaxial Shapes in Transitional Super-Heavy Nuclei: Ground-State Deformation and Shape Coexistence along the Flerovium ( Z=114 ) Chain of Isotopes

2020 ◽  
Vol 125 (19) ◽  
Author(s):  
J. Luis Egido ◽  
Andrea Jungclaus
Keyword(s):  
Ground State ◽  
Shape Coexistence ◽  
Heavy Nuclei ◽  
Super Heavy Nuclei

Shape coexistence inBr71and the question of the ground-state spin ofKr71

2005 ◽  
Vol 72 (2) ◽  
Author(s):  
S. M. Fischer ◽  
T. Anderson ◽  
P. Kerns ◽  
G. Mesoloras ◽  
D. Svelnys ◽  
...  
Keyword(s):  
Ground State ◽  
Shape Coexistence ◽  
Ground State Spin ◽  
State Spin

scholarly journals Chronicle of the discovery of the back-bending phenomenon in atomic nuclei: a personal recollection 50 years on

2021 ◽  
Vol 46 (1) ◽  
Author(s):  
Hans Ryde
Keyword(s):  
Nuclear Structure ◽  
Ground State ◽  
Energy Levels ◽  
Historical Context ◽  
Rotational Frequency ◽  
Heavy Nuclei ◽  
Atomic Nuclei ◽  
Key Points ◽  
The Moment ◽  
The Right

AbstractA chronicle describing the historical context and the development of ideas and experiments leading to the discovery of the back-bending phenomenon in rapidly rotating atomic nuclei some 50 years ago is presented. The moment of inertia of some atomic nuclei increases anomalously at a certain rotational frequency, revealing important clues to our understanding of nuclear structure. I highlight the decisive interactions and contacts between experimentalists and theorists, which created the right environment, allowing for the revelation of an undetected phenomenon in Nature. Finally, I reflect on the key points allowing for the discovery and particularly point to the importance of systematic surveys, which in this case investigated the energy levels in heavy nuclei of a large sample of elements, as well as to the accuracy of the measurements of the ground state levels made at the time.

REVIEW ON THEORETICAL STUDIES OF SUPERHEAVY NUCLEI

2006 ◽  
Vol 15 (07) ◽  
pp. 1587-1599 ◽  
Author(s):  
ZHONGZHOU REN ◽  
DINGHAN CHEN ◽  
CHANG XU
Keyword(s):  
Ground State ◽  
Large Mass ◽  
Mass Region ◽  
Superheavy Nuclei ◽  
Theoretical Studies ◽  
Shape Coexistence ◽  
Good Test ◽  
Α Decay ◽  
The Stability ◽  
Theoretical Results

Superheavy elements have provided a good test of the validity of both nuclear structure models and nuclear decay models in a large mass region. We firstly review the recent progress on theoretical studies of superheavy nuclei. Emphasis is placed on the structure and decay of superheavy nuclei. Then theoretical results of odd-odd nuclei with Z = 109 - 115 are presented and discussed. It is clearly demonstrated that there is shape coexistence for the ground state of many superheavy nuclei from different models and many superheavy nuclei are deformed. In some cases superdeformation can become the ground state of superheavy nuclei and it is important for future studies of superheavy nuclei. This can lead to the existence of low-energy isomers in the superheavy region and it plays an important role for the stability of superheavy nuclei. As α-decay and spontaneous fission plays a crucial role for identifications of new elements, we also review some typical models of α-decay half-lives and spontaneous fissions half-lives. Some new views on superheavy nuclei are presented.

THE PROCESSES OF FUSION-FISSION AND QUASI-FISSION OF HEAVY AND SUPER-HEAVY NUCLEI

2008 ◽  
Author(s):  
M. G. ITKIS ◽  
A. A. BOGACHEV ◽  
E. V. CHERNYSHEVA ◽  
I. M. ITKIS ◽  
G. N KNYAZHEVA ◽  
...  
Keyword(s):  
Heavy Nuclei ◽  
Super Heavy Nuclei

STRUCTURE OF SUPER-HEAVY NUCLEI IN MEAN-FIELD MODELS

2001 ◽  
Author(s):  
K. Rutz ◽  
T. Bürvenich ◽  
M. Bender ◽  
P.–G. Reinhard ◽  
J. A. Maruhn ◽  
...  
Keyword(s):  
Mean Field ◽  
Heavy Nuclei ◽  
Mean Field Models ◽  
Super Heavy Nuclei

Investigations on the study of entrance channel effects in synthesis of superheavy elements using Cr-induced fusion reactions

2020 ◽  
Vol 29 (08) ◽  
pp. 2050061
Author(s):  
H. C. Manjunatha ◽  
N. Manjunatha ◽  
L. Seenappa
Keyword(s):  
Atomic Number ◽  
Asymmetry Parameter ◽  
Superheavy Elements ◽  
Entrance Channel ◽  
Heavy Nuclei ◽  
Fusion Reactions ◽  
Number Range ◽  
Mass Asymmetry ◽  
Number Formula ◽  
Super Heavy Nuclei

We have investigated the synthesis of superheavy elements using Cr-induced fusion reactions. We have studied all possible Cr-induced fusion reactions for the synthesis of super heavy nuclei [Formula: see text]. We have achieved the semi-empirical formula for fusion barrier heights ([Formula: see text]), positions ([Formula: see text]), curvature of the inverted parabola ([Formula: see text]) of Cr-induced fusion reactions for the synthesis of superheavy nuclei with atomic number range [Formula: see text]. The proposed formula produces fusion barriers of Cr-induced fusion reactions for the synthesis of super heavy nuclei with the simple inputs of mass number ([Formula: see text]) and atomic number ([Formula: see text]) of projectile-targets. We have also identified the targets for Cr-induced fusion reactions to synthesis superheavy elements of [Formula: see text]. We have also studied the entrance channel parameters such as mass asymmetry ([Formula: see text]), charge asymmetry ([Formula: see text]), coulomb interaction parameter ([Formula: see text]’), Businaro–Gallone mass asymmetry parameter ([Formula: see text]) and Isospin asymmetry parameter [[Formula: see text]]. We hope that our predictions may be the guide for the future experiments in the synthesis of more superheavy elements using [Formula: see text]Cr-induced fusion reactions.

Nuclear structure properties of spin-1/2 heavy nuclei within the relativistic cluster model

2020 ◽  
Vol 29 (05) ◽  
pp. 2050026
Author(s):  
Keivan Darooyi Divshali ◽  
Mohammad Reza Shojaei
Keyword(s):  
Nuclear Structure ◽  
Beta Decay ◽  
Ground State ◽  
Cluster Model ◽  
Heavy Nuclei ◽  
Core Cluster ◽  
Phenomenological Potential ◽  
The Stability ◽  
Uvarov Method ◽  
Structure Properties

[Formula: see text]C is a beta decay isotope, its beta decay is very slow reflecting the stability of this nucleus and emitted from medium and heavy mass nuclei. The [Formula: see text]C result is in excellent agreement with the favored ground-state-to-ground-state transition according to the cluster model of Blendowske et al. We study nuclear structure properties of spin-1/2 heavy nuclei in the relativistic core-cluster model, that its cluster is [Formula: see text]C. According to this model for spin-1/2 heavy nuclei and for obtaining its wave function, we solve the Dirac equation with the new phenomenological potential by parametric Nikiforov–Uvarov method and then calculate the binding energy and charge radius.

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