scholarly journals Influence of Deformed Surface Diffuseness on Elastic Scattering Reactions Involving Actinide and Lanthanide Targets

2021 ◽  
Vol 66 (2) ◽  
pp. 105
Author(s):  
M. Aygun
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Optical Model ◽  
Theoretical Calculations ◽  
Real Potential ◽  
Angle Dependence ◽  
Spherical Structure ◽  
Surface Diffuseness ◽  
Scattering Cross Sections ◽  
Theoretical Results

The effect of the deformed surface diffuseness on the elastic scattering reactions with actinide and lanthanide targets is examined. The elastic scattering cross-sections are calculated by assuming the spherical structure for the projectiles and both spherical and deformed structures for the target nuclei. The theoretical calculations are performed by using spherical and deformed Broglie–Winther potentials for the real potential and the Woods–Saxon potential for the imaginary potential in the framework of the optical model. Finally, the effect of the angle dependence on the deformed surface diffuseness for two different orientation angles such as 0 = п/4 and 0 = п/2 is studied. All the theoretical results are compared with both one another and experimental data.

Microscopic spin-orbit potential for p +6He elastic scattering

2019 ◽  
Vol 28 (09) ◽  
pp. 1950074
Author(s):  
Zakaria M. M. Mahmoud ◽  
Awad A. Ibraheem ◽  
M. A. Hassanain
Keyword(s):  
Experimental Data ◽  
Elastic Scattering ◽  
Cross Sections ◽  
Optical Model ◽  
Spin Orbit ◽  
Current Form ◽  
Density Distributions ◽  
Orbit Potential ◽  
Scattering Cross Sections ◽  
Good Agreement

In this work, we simultaneously reanalyzed the differential elastic scattering cross-sections ([Formula: see text]) and the vector analyzing power ([Formula: see text]) of [Formula: see text]He elastic scattering. This analysis was performed using the folded optical model for both real central and spin-orbit (SO) potentials, respectively. For the imaginary central, we used the usual Woods-Saxon (WS) form. Three different model density distributions are used to calculate the potential. We aimed to examine the applicability of the microscopically derived SO potential and the structure effect of 6He nucleus. The presence of the [Formula: see text] experimental data of [Formula: see text]He makes it interesting for this study. Our calculations showed that the three densities gave similar predictions for the cross-sections data. The three microscopic SO potentials calculations of [Formula: see text] are not in a good agreement with the experimental data. We concluded that the SO formalism in its current form needs more investigations for exotic halo nuclei.

scholarly journals Comparative analysis of proximity potentials to describe scattering of 13C projectile off 12C, 16O, 28Si and 208Pb nuclei

2018 ◽  
Vol 64 (2) ◽  
pp. 149 ◽  
Author(s):  
M. Aygun
Keyword(s):  
Experimental Data ◽  
Comparative Analysis ◽  
Elastic Scattering ◽  
Cross Sections ◽  
Optical Potential ◽  
Saxon Potential ◽  
208Pb Target ◽  
Scattering Cross Sections ◽  
First Time ◽  
Theoretical Results

In this work, we examine the elastic scattering cross sections of 13C on 12C, 16O, 28Si and 208Pb target nuclei at different incident energies. For the first time, we apply six types of proximity potentials such as Broglia andWinther 1991 (BW 91), AageWinther (AW95), Christensen and Winther 1976 (CW 76), Bass 1973 (Bass 73), Bass 1977 (Bass 77) and Bass 1980 (Bass 80) in order to obtain the real part of the optical potential. The imaginary part is taken as the Woods-Saxon potential. Theoretical results are compared with each other as well as the experimental data.

Elastic Scattering of Low Energy Positrons by Atoms

1961 ◽  
Vol 16 (5) ◽  
pp. 500-505 ◽  
Author(s):  
F. B. Malik
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Dominant Role ◽  
Low Energy ◽  
S Wave ◽  
Positron Scattering ◽  
Analytical Approximations ◽  
Scattering Cross Sections ◽  
Theoretical Results ◽  
Oxygen Fluorine

Elastic scattering cross sections of low energy positrons (0 to about 40 eV) by Helium, Carbon, Nitrogen, Oxygen, Fluorine, Neon and Argon atoms are calculated by variational methods. The scattering potentials are taken to be the analytical approximations of different HARTREE potentials. Only s-wave is included. Comparisons with the available experimental datas of positron scattering by He, Ne an reveal that either a considerable strong polarisation potential will be required to bring the theoretical results at par with experiments or the formation of virtual positronium play a dominant role for this kind of elastic scattering.

Investigation of the elastic and inelastic scattering of 3He from 9Be in the energy range 30–60MeV

2018 ◽  
Vol 27 (10) ◽  
pp. 1850089 ◽  
Author(s):  
D. M. Janseitov ◽  
S. M. Lukyanov ◽  
K. Mendibayev ◽  
Yu. E. Penionzhkevich ◽  
N. K. Skobelev ◽  
...  
Keyword(s):  
Excited State ◽  
Elastic Scattering ◽  
Inelastic Scattering ◽  
Excited States ◽  
Cross Sections ◽  
Optical Model ◽  
Theoretical Calculations ◽  
Deformation Parameters ◽  
Double Folding ◽  
Coupled Channel

We have measured the differential cross-sections for the elastic as well as inelastic scattering populating the 2.43[Formula: see text]MeV [Formula: see text] excited state in [Formula: see text] using [Formula: see text] beams at energies of 30, 40 and 47[Formula: see text]MeV on a [Formula: see text] target. The experimental results for the elastic scattering were analyzed within the framework of the optical model using the Woods–Saxon and double-folding potentials. The theoretical calculations for the concerned excited states were performed using the coupled-channel method. The optimal deformation parameters for the excited states of [Formula: see text] nucleus were extracted.

Folding model analysis of 28Si elastic scattering using different density distributions

2021 ◽  
pp. 2150176
Author(s):  
M. Aygun
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Folding Model ◽  
Density Distributions ◽  
Double Folding Model ◽  
Independent Form ◽  
Double Folding ◽  
Scattering Cross Sections ◽  
Theoretical Results ◽  
Good Agreement

The elastic scattering cross-sections of [Formula: see text]Si projectile by [Formula: see text]Al, [Formula: see text]Si, [Formula: see text]Ni, [Formula: see text]Ni and [Formula: see text]Pb targets are analyzed using the double folding model based on the effective M3Y interaction which is known as the most popular density independent form. In the calculations of the double folding model, 16 different density distributions of [Formula: see text]Si nucleus are examined. A very good agreement between experimental data and theoretical results is obtained, and also the literature results support our results. In addition, dependence on incident energy, target atomic number and target mass number of the imaginary potential depth is studied, and new and global equations are proposed.

scholarly journals A Comparison of Proximity Potentials in the Analysis of Heavy-Ion Elastic Cross Sections

2018 ◽  
Vol 63 (10) ◽  
pp. 881 ◽  
Author(s):  
M. Aygun
Keyword(s):  
Experimental Data ◽  
Elastic Scattering ◽  
Cross Sections ◽  
Optical Model ◽  
Heavy Ion ◽  
Comprehensive Analysis ◽  
Angular Distributions ◽  
Similarities And Differences ◽  
First Time ◽  
Theoretical Results

To obtain alternative nuclear potentials is very important in explaining the heavy-ion reactions, as well as light-ion ones. For this purpose, a comprehensive analysis of six different proximity potentials ([1, 9–12, 15]) is performed for the first time in the present study. In order to see the availability of the potentials, the elastic-scattering angular distributions of 40Ca by different target nuclei from 32S to 208Pb are calculated within the framework of the optical model. The theoretical results are compared with each other and with experimental data. The similarities and differences of the potentials are discussed, and some alternative potentials are proposed.

Investigation of the elastic and inelastic scattering of α-particles from 13C in the energy range 26.6–65MeV

2016 ◽  
Vol 25 (10) ◽  
pp. 1650078 ◽  
Author(s):  
N. Burtebayev ◽  
S. K. Sakhiyev ◽  
D. M. Janseitov ◽  
Zh. Kerimkulov ◽  
D. Alimov ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Inelastic Scattering ◽  
Excited States ◽  
Cross Sections ◽  
Optical Model ◽  
Theoretical Calculations ◽  
Elastic And Inelastic Scattering ◽  
Double Folding ◽  
Coupled Channel ◽  
Α Particles

We have measured the differential cross-sections for the elastic and inelastic scattering of [Formula: see text]-particles on [Formula: see text]C target at the isochronous cyclotron U-150 M INP Republic of Kazakhstan. The beam energies of [Formula: see text]-particles were 29[Formula: see text]MeV and 50[Formula: see text]MeV. As a result of research we obtained new experimental data for the [Formula: see text] + [Formula: see text]C elastic scattering and inelastic one leading to the 3.68 ([Formula: see text]), 6.86 ([Formula: see text]) and 7.5 ([Formula: see text])[Formula: see text]MeV excited states of [Formula: see text]C nucleus. The experimental results on elastic scattering were analyzed within the framework of the optical model using Woods–Saxon potential and the double folding one. The theoretical calculations for the concerned excited states were performed using the coupled channel (CC) method. The optimal deformation parameters for the excited states of [Formula: see text]C nucleus were extracted.

A ALow-Energy Direct Channel Regge-pole Approach to α-C12Elastic Scattering .I

1981 ◽  
Vol 36 (5) ◽  
pp. 443-446 ◽  
Author(s):  
D. Majumdar ◽  
A. Roy Chowdhury ◽  
T. Roy
Keyword(s):  
Elastic Scattering ◽  
Compound Nucleus ◽  
Cross Sections ◽  
Regge Pole ◽  
Direct Channel ◽  
Scattering Cross ◽  
Scattering Cross Sections ◽  
Background Effect

Abstract Differential scattering cross-sections for the elastic scattering of α by C12 at laboratory bombarding energies from 11.0 to 16.0 MeV have been evaluated in the direct channel Regge-pole formalism, taking into account the contributions from a few nearby dominant excited levels of the compound nucleus O16 and incorporating the background effect. The relevant pole-parameters have also been predicted.

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