The scattering of 29 MeV 3 He-particles by 1 H, 2 H, 3 He and 4 He nuclei

1960 ◽  
Vol 258 (1293) ◽  
pp. 202-214 ◽  
Keyword(s):  
Group Theory ◽  
Elastic Scattering ◽  
Cross Sections ◽  
Photographic Plate ◽  
Light Nuclei ◽  
Angular Distributions ◽  
Angular Range ◽  
Centre Of Mass ◽  
Plate Method ◽  
Inelastic Processes

Angular distributions for the scattering of 29 MeV 3 He-particles by light nuclei have been observed using a photographic plate method. Absolute differential cross-sections for elastic scattering, and for inelastic processes for 2 H, 3 He and 4 He nuclei, are given within the centre-of-mass angular range 20 to 150°. The elastic scattering distributions for the 1 H and 3 He nuclei have been compared with predictions based on resonating group theory.

scholarly journals Study of cluster structures in nuclei through the ratio method

2020 ◽  
Vol 56 (12) ◽  
Author(s):  
Pierre Capel ◽  
Ronald C. Johnson ◽  
Filomena M. Nunes
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Intermediate Energy ◽  
Halo Nuclei ◽  
Ratio Method ◽  
Angular Distributions ◽  
Neutron Halo ◽  
Target Interaction ◽  
Nuclear Systems ◽  
Reaction Channels

AbstractFor one-neutron halo nuclei, the cross sections for elastic scattering and breakup at intermediate energy exhibit similar angular dependences. The Recoil Excitation and Breakup (REB) model of reactions elegantly explains this feature. It also leads to the idea of a new reaction observable to study the structure of loosely-bound nuclear systems: the Ratio. This observable consists of the ratio of angular distributions for different reaction channels, viz. elastic scattering and breakup, which cancels most of the dependence on the reaction mechanism; in particular it is insensitive to the choice of optical potentials that simulate the projectile-target interaction. This new observable is very sensitive to the structure of the projectile. In this article, we review a series of previous papers, which have introduced the Ratio Method and its extension to low beam energies and proton-halo nuclei.

Elastic Scattering Angular Distributions of Fast Neutrons on Light Nuclei

1955 ◽  
Vol 98 (3) ◽  
pp. 669-673 ◽  
Author(s):  
Harvey B. Willard ◽  
Joe K. Bair ◽  
Joe D. Kington
Keyword(s):  
Elastic Scattering ◽  
Light Nuclei ◽  
Angular Distributions ◽  
Fast Neutrons

The proton microscopic optical potential based on Skyrme interaction

2018 ◽  
Vol 27 (03) ◽  
pp. 1850023
Author(s):  
Yongli Xu ◽  
Yinlu Han ◽  
Qingbiao Shen
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Optical Potential ◽  
Local Density ◽  
Mass Range ◽  
Reaction Cross ◽  
Light Nuclei ◽  
Skyrme Interaction ◽  
The Green Function ◽  
Microscopic Optical Potential

The proton microscopic optical potential (MOP) based on Skyrme interaction has been achieved by the Green function method in the nuclear matter, and given by the local density approximation (LDA) for finite nuclei. The reaction cross-sections, elastic scattering angular distributions, analyzing powers, and spin-rotation functions are predicted by the obtained proton MOP with Skyrme interaction SkC in the mass range of target nuclei 24[Formula: see text][Formula: see text][Formula: see text]A[Formula: see text][Formula: see text][Formula: see text]209 with incident proton energy below 100[Formula: see text]MeV. These observables are further predicted for some light nuclei and actinide nuclei below 100[Formula: see text]MeV. The prediction is compared with existing experimental data. It is revealed that the obtained proton MOP based on Skyrme interaction SkC can satisfactorily describe the proton–nucleus elastic scattering.

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.

THE PHOTOPROTONS EMITTED FROM OXYGEN-16 NUCLEI

1956 ◽  
Vol 34 (10) ◽  
pp. 1022-1032 ◽  
Author(s):  
D. L. Livesey
Keyword(s):  
Excitation Function ◽  
Interference Effect ◽  
Proton Energy ◽  
Photographic Plate ◽  
Electric Quadrupole ◽  
High Energy ◽  
Angular Distributions ◽  
Energy Distributions ◽  
Plate Method ◽  
Oxygen Gas

The photographic plate method has been used to study photoprotons emitted from oxygen gas exposed to bremsstrahlung of maximum energies 30, 35, and 70 Mev. The proton energy distributions above 5 Mev. show maxima corresponding to peaks in the (γ, p) excitation function at 20.7, 21.9, and 24.0 Mev. The proton angular distributions are anisotropic, in general agreement with a sin2θ function, but the high-energy protons exhibit a degree of asymmetry about the 90° angle which may be due to a small electric-quadrupole interference effect.

Elastic scattering analysis of p+40Ca at incident energies from threshold to 48.4 MeV and nuclear matter radius

2015 ◽  
Vol 24 (07) ◽  
pp. 1550055
Author(s):  
Atef Ismail ◽  
Yen Cheong Lee ◽  
M Tammam
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Theoretical Calculations ◽  
Reaction Cross ◽  
Angular Distributions ◽  
Folding Potential ◽  
Density Distributions ◽  
Proton Elastic Scattering ◽  
Broad Energy Range ◽  
Broad Energy

Proton elastic scattering at various incident energies is one method to study nuclear density distributions and nuclear radii. Single folding potential describing the p-scattering on 40 Ca over a broad energy range 9–48.4 MeV is constructed. The resulting potential does not need any renormalization to fit the measured elastic scattering angular distributions and total reaction cross-sections. Furthermore, correlation between volume integral and proton incident energy is discussed. Theoretical calculations are in a good agreement with existing experimental data.

THE SCATTERING OF PROTONS ON 7Li, 9Be, AND 12C AT 100 MEV

1966 ◽  
Vol 44 (12) ◽  
pp. 2961-2971 ◽  
Author(s):  
S. K. Mark ◽  
P. M. Portner ◽  
R. B. Moore
Keyword(s):  
Angular Distribution ◽  
Inelastic Scattering ◽  
Cross Sections ◽  
Differential Cross ◽  
Target Nucleus ◽  
Energy Region ◽  
Angular Distributions ◽  
Angular Range ◽  
Existing Data ◽  
Octupole Excitation

Elastic and inelastic scattering of protons on 7Li, 9Be, and 12C have been studied, using the 100-MeV proton beam from the McGill synchrocyclotron. Differential cross sections for the various groups of scattered protons were measured over an angular range of 5° to 90° (lab). For proton groups resulting from a quadrupole excitation in the target nucleus, the angular distribution was found to increase at scattering angles less than 10°. Angular distributions corresponding to an octupole excitation were observed to decrease at small angles. The results have been compared with existing data in this energy region.

Applicability of the systematic helium-3 potential for triton-nucleus reactions

2015 ◽  
Vol 24 (01) ◽  
pp. 1550005 ◽  
Author(s):  
Yong-Li Xu ◽  
Hai-Rui Guo ◽  
Yin-Lu Han ◽  
Qing-Biao Shen
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Optical Model ◽  
Model Potential ◽  
Reaction Cross ◽  
Angular Distributions ◽  
Optical Model Potential ◽  
Helium 3 ◽  
Reasonable Description ◽  
Potential Parameters

The elastic scattering angular distributions of triton are calculated by the obtained systematic helium-3 global optical model potential parameters and compared with the available experimental data. These results show that the present global optical model potential can give a reasonable description of the elastic scattering of triton. The total reaction cross-sections of triton as a function of energy per nucleon are also further investigated and the reasonable results are presented.

scholarly journals NUCLEAR MEAN-FIELD DESCRIPTION OF PROTON ELASTIC SCATTERING BY 12,13 C AT LOW ENERGIES

2020 ◽  
Vol 31 (1) ◽  
Author(s):  
Huan Nhut Phan
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Nuclear Reactions ◽  
Mean Field ◽  
Nuclear Astrophysics ◽  
Nucleon Nucleon ◽  
Light Nuclei ◽  
Intermediate Energies ◽  
Proton Elastic Scattering ◽  
Low Energies

Nuclear reactions of proton by light nuclei at low energies play a key role in the study ofnucleosynthesis which is of interest in nuclear astrophysics. The most fundamental process whichis very necessary is the elastic scattering. In this work, we construct a microscopic proton-nucleuspotential in order to describe the differential cross-sections over scattering angles of the protonelastic scattering by 12C and 13C in the range of available energies 14 - 22 MeV. The microscopicoptical potential is based on the folding model using the effective nucleon-nucleon interactionCDM3Yn. The results show the promising use of the CDM3Yn interactions at low and very lowenergies, which were originally used for nuclear reactions at intermediate energies. This could bethe premise for the study of nuclear reactions using CDM3Yn interaction in astrophysics at lowenergies.

scholarly journals Microscopic analysis of elastic scattering cross sections for different densities of $^{8}$Li nucleus on light, medium and heavy mass targets

2019 ◽  
Vol 65 (4 Jul-Aug) ◽  
pp. 404
Author(s):  
M. Aygun ◽  
And Z. Aygun
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Microscopic Analysis ◽  
Angular Distributions ◽  
Weakly Bound ◽  
Density Distributions ◽  
Double Folding ◽  
Scattering Cross Sections ◽  
Light Medium ◽  
Good Agreement

The elastic scattering angular distributions of weakly bound nucleus$^{8}$Li on $^{7}$Li, $^{9}$Be, $^{12}$C, $^{13}$C, $^{14}$N,$^{27}$Al, $^{51}$V, $^{58}$Ni, and $^{208}$Pb are analyzed atvarious incident energies. For this purpose, the real potential isgenerated for nine different density distributions of the $^{8}$Linucleus by using the double folding model within the optical model.The theoretical results are in good agreement with the experimentaldata. In our study, also, new and practical sets of imaginarypotentials for the investigated densities are derived.

Sign in / Sign up

Export Citation Format

Share Document