
TY  - JOUR
A1  - A Hassan, Mohamed 
A1  - EA Awd-Allah, Hamed 
A1  - SA Hassan, Samia 
A1  - MA Tag El-Din, Ibrahim 
T1  - Phase Variation Effect on Proton&#8211;Nucleus Elastic Scattering
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1996
VL  - 49
IS  - 3
SP  - 655
EP  - 668
KW  - 
UR  - https://doi.org/10.1071/PH960655 
N2  - Proton&#8211;deuteron elastic scattering at intermediate and high energies illustrates the importance of the phase variation of the nucleon&#8211;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)&#8254; 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&#8211;4He elastic scattering differential cross section at the minimum region in the energy range 97&#8211;393 GeV. 
ER  -

