To survey strong interaction of Hadrons , en estimate called high energy approximation is applied. This estimate describes collision of particles with each other and scattering from multi-focus nucleuses like diffraction phenomenon in optics. Glauber multiple scattering process theory is applied in analyzing elastic and inelastic collision of Hadrons in a range from hundreds MeV to tens of GeV. In elastic collision, scattering amplitude (collision scattering matrix) is equal to total ranges of multiple collisions inside the nucleus. It’s possible to express Glauber multiple scattering factor in a form of mathematic series. So that each elements shows the number of occurred scattering inside the nucleus. Determination of scattering amplitude by the high energy approximation depends on elected primary coming wave function of the shot particle and function of out coming wave from the target nucleus. Having these information it’s not so hard to determine collision range (scattering amplitude). Applying high energy approximation in calculating the amplitude, main propose of this work is to determine differential cross section and other properties of collision of pion in middle energy with 7Li nucleus in cluster model (? ,?) . We will show that resulted diagrams from different and separate collisions of pion with each cluster, does not lead to a complete description of the phenomenon, so it’s require to calculate total resultant of collision with every clusters.
کلید واژگان :Glauber's multiple scattering theory; Green function; Profile function; .
ارزش ریالی : 600000 ریال
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