Journal of Physical Studies 16(4), Article 4201 [8 pages] (2012) DOI: https://doi.org/10.30970/jps.16.4201 TOPOLOGY OF 28Si FRAGMENTATION AT DIFFERENT ENERGIES M. S. El-Nagdy{1}, A. Abdelsalam{2}, B. M. Badawy{3}, A. Algaood{4} 1Physics Department, Faculty of Science, Helwan University, Helwan, Egypt 2Physics Department, Faculty of Science Cairo University, Giza, Egypt 3Reactor Physics Department, Nuclear Research Center, Atomic Energy Authority, Egypt 4Physics Department, Faculty of Science, Amran University, Amran, Yemen Email: he\_cairo@yahoo.com

This paper presents the projectile fragments emerged from nonРcentral events of 3.7A GeV $^{28}$Si collisions in nuclear emulsion. The charges of these fragments were carefully measured and compared with those obtained from 3.7A GeV $^{28}$Si. The distributions of those charges were given and fitted by the Gaussian shapes. The topology of $^{28}$Si fragmentation is given. The dependence of fragmentation process on incident beam energy is studied. The presence of $α$-cluster inside silicon beam is investigated.

PACS number(s): 25.75.-q, 25.75.Dw, 25.75.Gz, 25.75.Ld, 25.70.Mn, 25.70.Pq, PACS number(s): 41.75.Ak, 41.75.Cn, 29.40.Rg, 07.68.+m

pdf