Multi-interaction of multi-nucleon transfer reactions in the whole-angle region

1996 ◽  
Vol 74 (3-4) ◽  
pp. 150-154 ◽  
Author(s):  
A. A. Farra
Keyword(s):  
Cross Sections ◽  
Exchange Process ◽  
Heavy Ion ◽  
Nucleon Nucleon ◽  
Transfer Reactions ◽  
Ion Transfer ◽  
Exchange Processes ◽  
Nucleon Nucleon Interaction ◽  
Double Folding ◽  
Good Agreement

Heavy-ion transfer reactions are studied using the exact finite-range DWBA (distorted wave Born approximation) calculations. To investigate the differential cross sections in the whole-angle region the reaction mechanism is considered as a coherent sum of direct and exchange processes. Both the double-folding microscopic nucleon–nucleon interaction and phenomenological Woods–Saxon form are used for the real and imaginary distorting potentials in the initial and final channels, respectively. The present calculations are in good agreement with the experimental data in the whole angular range. The inclusion of the exchange process improves the cross section's magnitude explicitly and leads to a better description of the backward oscillations. The values of the extracted normalization coefficients obtained are reasonable.

CONTRIBUTION OF THE PARITY DEPENDENT POTENTIAL IN HEAVY ION TRANSFER REACTIONS

1994 ◽  
Vol 03 (01) ◽  
pp. 219-238 ◽  
Author(s):  
AHMED OSMAN ◽  
A.A. FARRA
Keyword(s):  
Cross Sections ◽  
Bound State ◽  
Heavy Ion ◽  
Transfer Reactions ◽  
Ion Transfer ◽  
Ion Interactions ◽  
Spectroscopic Factors ◽  
Dependent Potential ◽  
Good Agreement ◽  
Dependent Interaction

The theory of heavy ion reactions with particle transfer is considered in the framework of the exact finite-range distorted wave Born approximation (EFR-DWBA). Modified Woods-Saxon potentials which include a parity dependent interaction and an angular momentum absorptive term have been used as the ion-ion interactions in the initial and final channels. The bound state interactions are represented by nucleus-nucleus inter-actions which include repulsive and attractive Yukawa type components. The present numerical calculations of the differential cross-sections are in good agreement with the experimental measurements. The distorting parity dependent potentials are found very important in reproducing the cross-sections at backward as well as at intermediate angles. The obtained extracted values of the spectroscopic factors are reasonable.

Systematic study of alpha-decay of super-heavy isotopes with Z = 120–126

2021 ◽  
pp. 2150033
Author(s):  
S. A. Seyyedi
Keyword(s):  
Spontaneous Fission ◽  
Alpha Decay ◽  
Nucleon Nucleon ◽  
Decay Modes ◽  
Nucleon Nucleon Interaction ◽  
Fragmentation Potential ◽  
Double Folding ◽  
Semi Empirical ◽  
Empirical Approaches ◽  
Good Agreement

Alpha-decay half-lives of the even–even superheavy isotopes with proton numbers [Formula: see text] have been calculated within the cluster model. The alpha-daughter potential was constructed by employing the density-dependent double-folding model with a realistic nucleon–nucleon interaction whose exchange part has a finite range approximation. The half-lives were calculated using Wentzel–Kramers–Brillouin (WKB) approximation with the alpha preformation factor. The results have shown that the computed alpha-decay half-lives were in good agreement with their counterpart calculated by different semi-empirical approaches. The obtained results have also shown a negative linear relationship between the logarithm of the preformation factor and the fragmentation potential for the understudy isotopes. Also, the calculated results have shown that isotopes [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] had longer half-lives than their adjacent isotopes, which indicates that the corresponding neutron or proton numbers have a magical or semi-magical properties. Furthermore, we have studied the competition between alpha-decay and spontaneous fission to predict possible decay modes from the even–even isotopes [Formula: see text]. The results revealed that the isotopes [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] had alpha-decay as a predominant mode of decay and the nuclei [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text] could not survive from the spontaneous fission. We hope that the theoretical prediction could be helpful for future investigation in this field.

scholarly journals Nucleon-nucleon correlation studies in heavy-ion transfer reactions

2020 ◽  
Vol 1643 ◽  
pp. 012097
Author(s):  
T Mijatović ◽  
S Szilner ◽  
L Corradi ◽  
F Galtarossa ◽  
D Montanari ◽  
...  
Keyword(s):  
Heavy Ion ◽  
Nucleon Nucleon ◽  
Transfer Reactions ◽  
Ion Transfer ◽  
Correlation Studies

scholarly journals Elastic scattering of one-proton halo nucleus 17F on different mass targets using semi microscopic potentials

2019 ◽  
Vol 65 (2) ◽  
pp. 168 ◽  
Author(s):  
Awad A. Ibraheem ◽  
Arwa S. Al-Hajjaji ◽  
And M. El-Azab Farid
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Nucleon Nucleon ◽  
Model Potential ◽  
Reaction Cross ◽  
Optical Model Potential ◽  
Nucleon Nucleon Interaction ◽  
Double Folding ◽  
Reaction Cross Sections ◽  
Proton Halo

The elastic scattering of 17F have been studied for different mass targets (e.g. 12C, 14N, 58Ni, 208Pb) at different energies. We used the double folding optical model potential based on the density-dependent DDM3Y effective nucleon-nucleon interaction. Both version of the density distribution of the one-proton halo 17F nucleus has been taken into account in the above mentioned potential. The data for angular distributions of the elastic scattering differential cross section and reaction cross sections has been successfully reproduced at different energies using the above potentials. The energy dependence and the target mass number dependence of scattering in the imaginary volume integrals and the total reaction cross sections has also been studied.

DOUBLE FOLDING ANALYSIS OF 6Li SCATTERING BY 12C, 40Ca, 90Zr AND 208Pb

2002 ◽  
Vol 11 (05) ◽  
pp. 437-444 ◽  
Author(s):  
N. A. El-NOHY ◽  
F. A. EL-AKKAD ◽  
A. M. ABDEL-MONEM ◽  
O. S. ABDEL-FATTAH
Keyword(s):  
Cross Sections ◽  
Optical Potential ◽  
Nucleon Nucleon ◽  
Folding Model ◽  
The Real ◽  
Folding Potential ◽  
Nucleon Nucleon Interaction ◽  
Experimental Values ◽  
Double Folding ◽  
Double Folding Potential

A double folding potential has been used to calculate the real part of optical potential of 6 Li scattering by 12 C , 40 Ca , 90 Zr and 208Pb. In this model the effective nucleon-nucleon interaction potential has been developed to include an energy and density dependent in a simple form. The real part of the optical potential calculated by the double folding model is then reduced to an equivalent Wood–Saxon form using a fitting program. The obtained Wood–Saxon potentials have been used to calculate the differential cross sections for elastic scattering of 6 Li nucleus by 12 C , 40 Ca , 90 Zr and 208 Pb . This method gives satisfactory agreement of the calculated differential scattering cross section with the corresponding experimental values.

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