TY  - JOUR
AU  - Singh, Manoj Kumar 
AU  - Soma, Arun Kumar 
AU  - Pathak, Ramji 
AU  - Singh, Venktesh 
PY  - 2010
TI  - Two Source Emission Behavior of Helium Projectile Fragments in 84Kr Interactions at Around 1 GeV per nucleon
JF  - Physics International
VL  - 1
IS  - 2
DO  - 10.3844/pisp.2010.95.101
UR  - https://thescipub.com/abstract/pisp.2010.95.101
AB  - Problem statement: The emission of helium projectile fragments has been studied in 84Kr
interactions with nuclei of the nuclear emulsion detector at relativistic energies below 2 GeV per
nucleon. Approach: The angular distribution of helium projectile fragments in terms of transverse
momentum could not be explained by a straight and clean-cut collision geometry hypothesis of
Participant-Spectator (PS) Model. Results: Therefore, it has been assumed that helium projectile
fragments were produced from two separate sources that belong to the projectile spectator region
differing drastically in their temperatures. It has also been clearly observed that the emissions of
helium projectile fragments were from two different sources. The contribution of helium projectile
fragments from contact layer or hot source was few percent of the total emission of helium projectile
fragments. Conclusion: Most of the helium projectile fragments were emitted from the cold source.