Optical model analysis of elastic scattering of 100-MeV protons from light nucle

1968 ◽  
Vol 46 (23) ◽  
pp. 2645-2657 ◽  
Author(s):  
T. Y. Li ◽  
S. K. Mark
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Optical Model ◽  
Light Nuclei ◽  
Geometrical Parameters ◽  
Heavy Nuclei ◽  
The Real ◽  
Radius Parameter ◽  
Optical Model Analysis ◽  
Mev Protons

Elastic scattering cross sections for the interaction of 100-MeV protons with 6Li, 7Li, 9Be, and 12C have been analyzed using the optical model. The experimental differential cross sections are reasonably reproduced. It has been found that no average set of geometrical parameters can provide a quantitative fit to the experimental data for all of these light nuclei; they must be treated individually, with optimum optical potential parameters fluctuating from one nucleus to another. Other features revealed in this analysis include: (1) the spin–orbit radius parameter is smaller than those of the real and imaginary parts of the potential, (2) surface and volume absorption potentials give equally good fit to the experimental results, (3) the radius parameters of the real and imaginary potentials differed from each other, and (4) the radius parameter of the real part of the potential is larger than those used for heavy nuclei.

Elastic scattering of 100 MeV protons from 3He and 4He

1970 ◽  
Vol 48 (21) ◽  
pp. 2629-2639 ◽  
Author(s):  
N. P. Goldstein ◽  
A. Held ◽  
D. G. Stairs
Keyword(s):  
Elastic Scattering ◽  
Exchange Interaction ◽  
Small Angle ◽  
Optical Model ◽  
Nucleon Nucleon ◽  
Heavy Nuclei ◽  
Wide Range ◽  
Optical Model Analysis ◽  
Mev Protons ◽  
Better Than

Elastic scattering of 100 MeV protons by 3He and 4He has been measured over a wide range of angles. Analysis of the small-angle results was carried out using a superposition of nucleon-nucleon amplitudes computed with both modern and old phase shifts. No significant differences were found in the accuracy of the predictions resulting from the two sets, but in both cases the 3He results were better than those of 4He. The peaking evident in the backward p–4He scattering but not seen in heavy nuclei has been interpreted in terms of an exchange interaction using an optical model analysis.

Optical-model analysis of elastic scattering and polarization of 49.5 MeV protons on 148Sm

1970 ◽  
Vol 154 (3) ◽  
pp. 513-525 ◽  
Author(s):  
P.B. Woollam ◽  
R.J. Griffiths ◽  
Joan F. Grace ◽  
V.E. Lewis
Keyword(s):  
Elastic Scattering ◽  
Optical Model ◽  
Model Analysis ◽  
Optical Model Analysis ◽  
Mev Protons

Diffuse-Surface Optical Model Analysis of Elastic Scattering of 17- and 31.5-Mev Protons

1957 ◽  
Vol 106 (4) ◽  
pp. 793-801 ◽  
Author(s):  
Michel A. Melkanoff ◽  
John S. Nodvik ◽  
David S. Saxon ◽  
Roger D. Woods
Keyword(s):  
Elastic Scattering ◽  
Optical Model ◽  
Model Analysis ◽  
Surface Optical ◽  
Diffuse Surface ◽  
Optical Model Analysis ◽  
Mev Protons

Scattering of 100-MeV protons by 11B and 16O

1970 ◽  
Vol 48 (6) ◽  
pp. 765-774 ◽  
Author(s):  
A. J. Houdayer ◽  
T. Y. Li ◽  
S. K. Mark
Keyword(s):  
Excited State ◽  
Elastic Scattering ◽  
Inelastic Scattering ◽  
Excited States ◽  
Optical Potential ◽  
Optical Model ◽  
Experimental Results ◽  
Optical Model Analysis ◽  
Potential Parameters ◽  
Mev Protons

The scattering of 100-MeV protons from 11B and 16O has been studied. An optical-model analysis of the elastic scattering on these nuclei has been performed and a consistent set of optical potential parameters which gave a good fit to the experimental results was obtained. In the inelastic scattering on 11B, it has been found that the first and third excited states were weakly excited whereas the second excited state was fairly strongly excited. The results were explained in terms of the unified model.

The p +9Be elastic scattering below 30MeV: Optical model analysis and data normalization

2021 ◽  
pp. 2150024
Author(s):  
H. M. Maridi ◽  
A. Pakou ◽  
K. Rusek
Keyword(s):  
Elastic Scattering ◽  
Differential Cross Section ◽  
Cross Section ◽  
Cross Sections ◽  
Differential Cross ◽  
Optical Model ◽  
Reaction Cross ◽  
Data Normalization ◽  
Optical Model Analysis ◽  
Reaction Cross Sections

Differential cross-section data of elastic scattering for [Formula: see text]Be below a proton incident energy of 30[Formula: see text]MeV are evaluated by using two techniques. First, optical model analysis is performed and applied to the analyzing powers and reaction cross-sections to extract the optical potential parameters. Then, angular distributions of the differential cross-section are calculated with this potential and compared with the experimental data and normalization coefficients are extracted. Second, a consistent comparison between data sets with similar energies is considered in a minimization process to obtain another set of data normalization coefficients. The two techniques lead to similar normalized values for the existing data and consistently validate a body of low-energy data that can be safely used for further theoretical studies. Furthermore, the systematic behavior and energy dependence of the volume integral are determined as well as the energy dependence of the reaction cross-sections is predicted.

scholarly journals Optical Model Analysis of α + 40Ca at Elab=104 and 141.7 MeV

2020 ◽  
Vol 3 (2) ◽  
pp. 252-260
Author(s):  
RC Abenga ◽  
JO Fiase ◽  
GJ Ibeh
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Differential Cross ◽  
Optical Model ◽  
Effective Interaction ◽  
Nucleon Nucleon ◽  
Model Analysis ◽  
Mass Dependence ◽  
Section Data ◽  
Optical Model Analysis

Optical model analysis of the elastic scattering analysis of α + 40Ca at Elab=104 and 141.7 MeV have been performed using the folding model approach of the nuclear reaction video (NRV) knowledge base code. The M3Y-type effective nucleon-nucleon interaction derived using the lowest order constrained variational (LOCV) approach for mass number A=40 was used to obtain the results. Elastic scattering differential cross section data were obtained for this system at two bombarding energies. The calculated differential cross sections are in good agreement with the experimental results and the anticipated mass dependence of the M3Y-type effective interaction improved the results at forward angles. This shows that, the mass dependence of the M3Y-type effective interaction in our results should be of value in the description of the scattering of other nuclear systems

Optical-model calculation of the 9Be(3He, 3He)9Be elastic scattering

1968 ◽  
Vol 46 (17) ◽  
pp. 1967-1971 ◽  
Author(s):  
J. Y. Park
Keyword(s):  
Elastic Scattering ◽  
Model Calculation ◽  
Optical Model ◽  
Orbit Interaction ◽  
Light Nuclei ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Surface Absorption ◽  
Optical Model Analysis ◽  
Optical Model Calculation

Optical-model analysis of the elastic scattering of 6.0- and 8.0-MeV 3He particles on 9Be is performed with and without spin–orbit coupling. Good agreements with data are obtained, indicating the applicability of the optical model in describing the elastic scattering of 3He particles from such light nuclei as 9Be. Inclusion of spin–orbit interaction is found to improve fits, especially at backward angles. Almost equally good results are obtained by volume or surface absorption, although surface absorption gives slightly better fits at 8.0 MeV. Parameters giving the optimum fits to the data are presented and several ambiguities in the potential are discussed.

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