scholarly journals PROTON ELASTIC SCATTERING AND NEUTRON DISTRIBUTION OF UNSTABLE NUCLEI

1999 ◽  
Vol 08 (02) ◽  
pp. 167-178 ◽  
Author(s):  
K. KAKI ◽  
S. HIRENZAKI
Keyword(s):  
Elastic Scattering ◽  
Scattering Data ◽  
Neutron Density ◽  
Neutron Distribution ◽  
Density Distributions ◽  
Proton Elastic Scattering ◽  
Unstable Nuclei ◽  
Impulse Model

We study theoretically how we can determine the neutron density distributions of unstable nuclei from proton elastic scattering. We apply the relativistic impulse model to study the sensitivities of the observables to the density distributions which are expressed in Woods-Saxon form. We find that both the radius and diffuseness of densities can be determined from restricted elastic scattering data in principle. We think this result is helpful to design future experiments.

Neutron density distributions ofPb204,206,208deduced via proton elastic scattering atEp=295MeV

2010 ◽  
Vol 82 (4) ◽  
Author(s):  
J. Zenihiro ◽  
H. Sakaguchi ◽  
T. Murakami ◽  
M. Yosoi ◽  
Y. Yasuda ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Neutron Density ◽  
Density Distributions ◽  
Proton Elastic Scattering

Neutron density distributions analyzed in terms of relativistic impulse approximation for nickel isotopes

2015 ◽  
Vol 24 (03) ◽  
pp. 1550015 ◽  
Author(s):  
Kaori Kaki
Keyword(s):  
Form Factor ◽  
Elastic Scattering ◽  
Cross Section ◽  
Impulse Approximation ◽  
Model Analysis ◽  
Medium Effect ◽  
Neutron Density ◽  
Neutron Distribution ◽  
Density Distributions ◽  
Nickel Isotopes

Observables of proton elastic scattering from nickel isotopes (48–82 Ni ) are calculated based on relativistic impulse approximation (RIA), and nuclear density distributions are provided by relativistic mean-field (RMF) calculations. Contributions of a medium effect and multiple scattering to observables are evaluated and shown to be small at incident proton energies from 200 MeV through 500 MeV so that it is confirmed to perform a model analysis based on the fundamental RIA calculation. For 58,60,62,64 Ni isotopes, are considered proton distributions which are obtained by means of unfolding the charge form factor of proton from charge densities determined by the experiments of electron scattering. Through comparisons between results for the different proton densities, contributions of proton form factor to proton distributions and to elastic scattering observables at 300 MeV are discussed. It is shown that the neutron distribution is determined from the restricted observables, reaction cross-section and the first dip of differential cross-section, based on a model analysis of Woods–Saxon distribution in the case of 64 Ni target at 300 MeV. Contributions of tensor density and empirical proton density are shown to obtaining the neutron distribution with the model analysis. Compared with the similar studies for 40,60 Ca and 208 Pb , problems of the model analysis, which arise out of errors in observables, are discussed.

ANALYSIS OF p-4, 6, 8He AND p-6, 9, 11Li SCATTERING

2013 ◽  
Vol 22 (11) ◽  
pp. 1350082 ◽  
Author(s):  
Z. A. KHAN ◽  
DEEKSHA CHAUHAN ◽  
MINITA SINGH
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Scattering Data ◽  
Glauber Model ◽  
Neutron Density ◽  
Significant Discrepancy ◽  
Nucleon Density ◽  
Density Distributions ◽  
Dependent Part

Using the Coulomb modified Glauber model, we analyze the elastic scattering of protons from He and Li isotopes at 60 MeV and 72 MeV. The calculations require two inputs; the nucleon–nucleon (NN) amplitude and the nucleon density distributions in target nuclei. The central part of the NN amplitude is taken from the available NN scattering observables. To find the spin-dependent part, we employ p-4 He scattering data to fix its parameter values. For target nuclei, we use nucleon density distributions available in the literature. The NN amplitude, as obtained in this work, is then used to study the sensitivity of the calculated differential cross-section and polarization for p-6, 8 He scattering on the density distributions used. It is found that both the differential cross-section and polarization could provide a test to know which is the better choice of nucleon (especially neutron) density distributions. We also present the differential cross-sections for p-6, 9, 11 Li scattering at 60 MeV and 72 MeV in order to assess the suitability of the obtained NN amplitude. It is found that the results are in reasonable agreement with the experiment up to only moderate scattering angles, leaving significant discrepancy at large scattering angles. Our calculations suggest the need of medium modifications in the NN amplitude, arising due to Pauli blocking.

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.

Prediction of rms charge radius of proton using proton-proton elastic scattering data at TeV

2021 ◽  
Vol 67 (3 May-Jun) ◽  
pp. 491
Author(s):  
S. Zahra ◽  
B. Shafaq
Keyword(s):  
Experimental Data ◽  
Form Factor ◽  
Elastic Scattering ◽  
Cross Section ◽  
Charge Radius ◽  
Scattering Data ◽  
Proton Proton ◽  
Proton Elastic Scattering ◽  
Predicted Values ◽  
Good Agreement

Using  proton–proton elastic scattering data  at  TeV and squared four-momentum transfer 0.36 < -t <  0.76 (GeV/c)2 for 13 σBeam distance  and  0.07 < -t <  0.46 (GeV/c)2 for 4.3 σBeam distance, form factor of proton is predicted. Simplest version of Chou–Yang model is employed to extract the form factor by fitting experimental data of differential cross section from TOTEM experiment (for 13σBeamand 4.3 σBeam distance) to a single Gaussian. Root mean square (rms) charge radius of proton is calculated using this form factor.  It is found to be equal to 0.91 fm and 0.90 fm respectively. Which is in good agreement with experimental data and theoretically predicted values.

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