STUDY OF CLUSTERIZATION IN Li NUCLEI AT HIGH ENERGY Li 6 ·INDUCED REACTIONS IN EMULSION

Abstract

This thesis is concerned with the projectile

f ragmentat .on react 'onsn. duced by L ·6

c elus w. t h

emuls .on

nuclei at 4.5 A Gev/c incident momentum. Study of these reactions is suggested as a trail to disco,rer the internal structure of the Li 6 -nucleus, in other words, to investigate

the presence of 6

in a cluster configuration at high energy

6

reactions

of Li

-nucleus.

The proposed projectile

fragmentation processes are namely, stripping, dissociation

and general fragmentation reactions.

The separation of these processes via counter

experimental setups is known to be very difficult. On the contrary, by using the emulsion technique, the interactions belonging to these processes are easily identified.

The total cross sections of the above mentioned processes are estimated both theoretically and experimentally The measured angular distributions of the outgoing fragments are compared with that calculated theoretically. A good agreement between the experimental and theoretical values is found. Also, the mechanisms of these processes are discussed and the type of the momentum distribution (inside the projectile) according to which, the features of these mechanisms can be explained.