scholarly journals Elastic Scattering of Electron and Positron by Radium and Radon Atoms

2021 ◽  
Vol 13 (01) ◽  
pp. 1-11
Author(s):  
A .K. Yassir ◽  
◽  
A. H. Hussain ◽  
F. A. Ali ◽  
◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Differential Cross ◽  
Exchange Potential ◽  
Positron Scattering ◽  
Total Cross Sections ◽  
Total Potential ◽  
Correlation Potential ◽  
Experimental Values ◽  
Good Agreement

The Differential Cross Sections (DCS's), Total Cross Sections (TCS's) and Momentum Transfer Cross Sections (MTCS's) of electron and positron scattering by radium and radon atoms were calculated in the range of energy (5–500) eV using a total potential consisting of combining the static, exchange and polarization potentials at long distances. In addition, the correlation potential of Perdew–Zunger at short distances for electrons was used, as well as the correlation potential of Jain for positrons. The exchange potential for positrons was neglected. In this study, a good agreement with other experimental values and theoretical values of many investigators was found.

RELATIVISTIC OPTICAL MODEL FOR PROTON-NUCLEUS ELASTIC SCATTERING

2002 ◽  
Vol 11 (05) ◽  
pp. 425-436 ◽  
Author(s):  
M. Y. H. FARAG ◽  
M. Y. M. HASSAN
Keyword(s):  
Experimental Data ◽  
Elastic Scattering ◽  
Cross Sections ◽  
Differential Cross ◽  
Optical Potential ◽  
Optical Model ◽  
Potential Model ◽  
Optical Potential Model ◽  
Relativistic Description ◽  
Good Agreement

The relativistic description of the proton-nucleus elastic scattering can be considered within the framework of a relativistic optical potential model. The elastic scattering of proton with the nuclei 12 C , 16 O , 20 Ne , and 24 Mg at 800 MeV and 1.04 GeV are studied for relativistic and nonrelativistic treatments. The real optical potentials and the differential cross sections of these reactions are calculated. The obtained results are compared with the corresponding results obtained from the calculation depending on the Woods–Saxon optical potential which were adjusted to fit the experimental data. The present results are in good agreement with the experimental data.

Differential elastic electron scattering

1996 ◽  
Vol 74 (7-8) ◽  
pp. 461-467 ◽  
Author(s):  
Albert Crowe ◽  
Danica Cvejanović
Keyword(s):  
Elastic Scattering ◽  
Energy Dependence ◽  
Electron Scattering ◽  
Cross Sections ◽  
Differential Cross ◽  
Rare Gas ◽  
Differential Cross Sections ◽  
Elastic Electron ◽  
Elastic Electron Scattering ◽  
Positron Scattering

We present the energy dependence of electron–argon and electron–krypton differential cross sections for elastic scattering, discuss their general characteristics, and compare them with existing equivalent data on positron scattering. The present measurements were stimulated by corresponding positron–heavy rare-gas-atom results. Our first aim is to provide a set of data that can be directly compared with the data on positron scattering and hence possibly contribute to the understanding of structures in that data.

Elastic scattering of electrons by calcium atoms

2014 ◽  
Vol 92 (3) ◽  
pp. 206-215 ◽  
Author(s):  
Mahmudul Hasan ◽  
M. Alfaz Uddin ◽  
M. Ismail Hossain ◽  
A.K.F. Haque ◽  
A.K. Basak
Keyword(s):  
Experimental Data ◽  
Elastic Scattering ◽  
Cross Sections ◽  
Differential Cross ◽  
Optical Potential ◽  
Relativistic Dynamics ◽  
Strong Energy ◽  
Maximum Polarization ◽  
Better Than ◽  
Good Agreement

The differential, total, and momentum transfer cross sections along with the minima in the differential cross sections (DCSs) and the Sherman function S(θ) for the elastic scattering of electrons by calcium atoms have been calculated. These calculations are done within the framework of complex electron–atom optical potential and relativistic dynamics, in the energy range 1–2000 eV. The results obtained are in good agreement with the available experimental data and are better than the previous calculations in overall assessment. In the DCSs, the energies and angular positions of five critical minima have been confirmed. In the vicinity of these critical minima, nine maximum polarization points have been found within the range −0.90 ≤ S(θ) ≤ +0.73. Near the critical minima, a strong energy dependence of maximum polarization points is found.

STUDY OF SCATTERING 1H, 12C AND 16O NUCLEI ON 1P-SHELL AT ENERGY NEAR THE COULOMB BARRIER

2011 ◽  
Vol 20 (04) ◽  
pp. 980-986 ◽  
Author(s):  
A. AMAR ◽  
S. HAMADA ◽  
N. BURTEBAYEV ◽  
N. AMANGELDY
Keyword(s):  
Elastic Scattering ◽  
Energy Range ◽  
Cross Sections ◽  
Differential Cross ◽  
Coulomb Barrier ◽  
Transfer Reaction ◽  
Incident Beam ◽  
Measured Data ◽  
Potential Parameters ◽  
Good Agreement

Differential cross sections for the 6,7 Li ( p , p )6,7 Li and 10,11 B ( p , p )10,11 B elastic scattering were measured over the proton laboratory energy range from 300 to 1050 keV. The transfer reaction of the elastic scattering of carbon and oxygen on oxygen and carbon nuclei was studied through different experiments with incident beam of energy 1.75 MeV/ nucleon. Depending on the measured data by us and literature data, we could enhance the potential parameters using ECIS88 Code, as well as SPI-GENOA Code. Good agreement between theoretical and experimental in whole range.

Differential cross sections and analyzing powers for pd elastic scattering below 1.0 MeV

1983 ◽  
Vol 406 (3) ◽  
pp. 435-442 ◽  
Author(s):  
E. Huttel ◽  
W. Arnold ◽  
H. Berg ◽  
H.H. Krause ◽  
J. Ulbricht ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Differential Cross ◽  
Differential Cross Sections ◽  
Analyzing Powers

SCATTERING AND DISSOCIATION OF DEUTERONS AND 3H-NUCLEI BY NUCLEI AT INTERMEDIATE ENERGIES

1995 ◽  
Vol 04 (03) ◽  
pp. 563-586 ◽  
Author(s):  
YU. A. BEREZHNOY ◽  
V. YU. KORDA
Keyword(s):  
Elastic Scattering ◽  
Closed Form ◽  
Cross Sections ◽  
Differential Cross ◽  
Particle System ◽  
Center Of Mass ◽  
Scattering Angle ◽  
Intermediate Energies ◽  
Oscillating Functions ◽  
Analytical Expressions

We present a closed-form description that enables us to obtain the analytical expressions for the elastic scattering and dissociation differential cross-sections of deuterons and 3H-nuclei by heavy target nuclei. The resulting expressions are used to analyze the data for the 110 MeV deuterons elastically scattered on 208Pb-nuclei. The dissociation cross-sections of deuterons and 3H-nuclei are the oscillating functions of the scattering angle of the released two- and three-nucleon-particle system center-of-mass.

Differential cross-section measurements in positron–argon collisions

1996 ◽  
Vol 74 (7-8) ◽  
pp. 505-508 ◽  
Author(s):  
R. M. Finch ◽  
Á. Kövér ◽  
M. Charlton ◽  
G. Laricchia
Keyword(s):  
Elastic Scattering ◽  
Differential Cross Section ◽  
Inelastic Scattering ◽  
Energy Range ◽  
Cross Section ◽  
Cross Sections ◽  
Differential Cross ◽  
Coupling Effect ◽  
Channel Coupling ◽  
Scattering Cross

Differential cross sections for elastic scattering and ionization in positron–argon collisions as a function of energy (40–150 eV) are reported at 60°. Of particular interest is the energy range 55–60 eV, where earlier measurements by the Detroit group found a drop in the elastic-scattering cross section of a factor of 2. This structure has been tentatively attributed to a cross channel-coupling effect with an open inelastic-scattering channel, most likely ionization. Our results indicate that ionization remains an important channel over the same energy range and only begins to decrease at an energy above 60 eV.

Absolute Differential Cross Sections for Elastic Scattering of Electrons from CO at Intermediate and High Energies

2005 ◽  
Vol 22 (2) ◽  
pp. 321-323 ◽  
Author(s):  
Shi De-Heng ◽  
Liu Yu-Fang ◽  
Sun Jin-Feng ◽  
Yang Xiang-Dong ◽  
Zhu Zun-Lue
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Differential Cross ◽  
Differential Cross Sections ◽  
Absolute Differential ◽  
High Energies
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