Phase variation of the nucleon-nucleon amplitude and the spin observables in proton−4He elastic scattering

1990 ◽  
Vol 41 (4) ◽  
pp. R1348-R1350 ◽  
Author(s):  
R. J. Lombard ◽  
J. P. Maillet
Keyword(s):  
Elastic Scattering ◽  
Phase Variation ◽  
Nucleon Nucleon ◽  
Spin Observables

Nucleon-nucleon phase variation and in-medium effects on elastic scattering cross sections

2020 ◽  
Vol 95 (9) ◽  
pp. 095301
Author(s):  
M Y H Farag ◽  
I I A Bashter ◽  
I A M Abdul-Magead ◽  
M M H El-Azony
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Phase Variation ◽  
Nucleon Nucleon ◽  
Medium Effects ◽  
Scattering Cross ◽  
Scattering Cross Sections

Study of p-4Hetotal reaction cross-section using Glauber and Coulomb-modified Glauber models

2014 ◽  
Vol 23 (03) ◽  
pp. 1450010 ◽  
Author(s):  
Ibrahim M. A. Tag El-Din ◽  
M. M. Taha ◽  
Samia S. A. Hassan
Keyword(s):  
Elastic Scattering ◽  
Energy Range ◽  
Cross Section ◽  
Reaction Cross Section ◽  
Scattering Amplitude ◽  
Phase Variation ◽  
Nucleon Nucleon ◽  
Reaction Cross ◽  
Pauli Blocking ◽  
Elastic Scattering Amplitude

The total nuclear reaction cross-section σRfor p-4He in the energy range from 25 MeV to 1000 MeV is calculated within Glauber and Coulomb-modified Glauber models. The Coulomb-modified Glauber model (CMGM) is introduced via modification of the Coulomb trajectory of the projectile from a straight line, and calculation of the effective radius of interaction. The effects of in-medium nucleon–nucleon (NN) total cross-section, phase variation, high order momentum transfer component of nucleon–nucleon elastic scattering amplitude and Pauli blocking are studied. It is pointed out that the phase variation of the nucleon–nucleon amplitude plays a significant role in describing σRwith γ = -1.6 fm2at in-medium nuclear density ϱ = 0 and γ = -2 fm2at ϱ = 0.17 fm-3in the whole energy range. A remarkable fit to the available experimental data is obtained by invoking Pauli blocking and high order momentum transfer of nucleon–nucleon (NN) elastic scattering amplitude for Ep< 100 MeV.

Phase Variation Effect on Proton - Nucleus Elastic Scattering

1996 ◽  
Vol 49 (3) ◽  
pp. 655 ◽  
Author(s):  
Mohamed A Hassan ◽  
Hamed EA Awd-Allah ◽  
Samia SA Hassan ◽  
Ibrahim MA Tag El-Din
Keyword(s):  
Experimental Data ◽  
Elastic Scattering ◽  
Cross Section ◽  
Scattering Amplitude ◽  
Phase Variation ◽  
Nucleon Nucleon ◽  
Free Nucleon ◽  
High Energies ◽  
Elastic Scattering Amplitude ◽  
Variation Parameter

Proton–deuteron elastic scattering at intermediate and high energies illustrates the importance of the phase variation of the nucleon–nucleon elastic scattering amplitude as in previous work. Two kinds of phase variation are examined. The first is the usual one which is related to free nucleon-free nucleon collisions as suggested by Franco. The second is assumed to be related to the time ordering of multi-scattering processes. The two kinds play similar roles in improving the results. The contributions of both kinds lead to a good fit to the experimental data at the energies considered. The value of the phase variation parameter in each kind (where they are considered together), which gives a good fit to the experimental data, are approximately the same and of order 4 (GeV / c)‾ 2. Also, with relatively small values of the phase variation parameter, the phase variation effect improves the agreement with the experimental data for the p–4He elastic scattering differential cross section at the minimum region in the energy range 97–393 GeV.

Tensor and vector spin observables in p-d elastic scattering at 600, 800, and 1000 MeV

1987 ◽  
Vol 36 (5) ◽  
pp. 2010-2017 ◽  
Author(s):  
M. Haji-Saied ◽  
E. Bleszynski ◽  
M. Bleszynski ◽  
J. Carroll ◽  
G. J. Igo ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Spin Observables

Phase variation of the nucleon-nucleon amplitudes and non-eikonal propagation

1991 ◽  
Vol 17 (12) ◽  
pp. 1823-1831 ◽  
Author(s):  
R J Lombard ◽  
J P Maillet ◽  
J Van de Wiele
Keyword(s):  
Phase Variation ◽  
Nucleon Nucleon

Polarization parameter for nucleon-nucleon elastic scattering at 11.8 GeV/c

1978 ◽  
Vol 17 (7) ◽  
pp. 1709-1712 ◽  
Author(s):  
S. L. Kramer ◽  
D. S. Ayres ◽  
D. Cohen ◽  
R. Diebold ◽  
A. J. Pawlicki ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Nucleon Nucleon ◽  
Polarization Parameter
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