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Title: Characteristics of nucleus-nucleus interaction with relativistic heavy-ions

Thesis/Dissertation ·
OSTI ID:6045416

A systematic study of relativistic heavy-ion collisions in nuclear emulsion, initiated by /sup 40/Ar, /sup 56/Fe at E = 1.8 GeV/N, /sup 56/Fe at 0.8 GeV/N, and /sup 12/C at 400 MeV/N, has been made. Projectile fragmentation reactions, where there is no visual indication of target excitation, are studied in terms of multiplicity and projected angular distributions. The standard deviation widths of the projected angular distributions are compared with the first order theory of Lepore and Riddell. In quasi-central collisions, where a part of both the projectile and target nuclei participate, we have undertaken a study of the space angle distributions of the relativistic alpha particles, emitted in /sup 40/Ar-emulsion interactions at E = 1.8 GeV/N and /sup 56/Fe-emulsion interactions at E = 0.8 GeV/N. The large angle alpha particle distributions are fitted with moving relativistic Boltzmann distributions, and compared with distributions obtained by Monte Carlo simulation of ..cap alpha..-p hard scattering process. Mean free path of secondary relativistic projectile fragments, emitted in such collisions, are carefully studied to verify the presence of anomalous mfp component among these fragments. This is followed by a study of the mean free path of secondary alpha particles. Finally, in central collisions, the angular distributions of singly charged particles with ..beta.. > 0.7 are studied with a view to observe collective phenomena, such as nuclear shock wave in nuclear matter.

Research Organization:
State Univ. of New York, Buffalo (USA)
OSTI ID:
6045416
Resource Relation:
Other Information: Thesis (Ph. D.)
Country of Publication:
United States
Language:
English