DISSIPATIVE NUCLEAR REACTION IN LOW ENERGY LIGHT HEAVY ION COLLISION - Dey, Aparajita
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The dissipative nuclear reaction mechanism in low energy light heavy-ion collisions have been studied. Inclusive energy distributions for various fragments and light charged particles have been measured in a wide angular range in several reactions. In the 20Ne+12C reaction, the fragment yield was mostly from the equilibrium decay of composite system, although the cross-sections for B, C, N fragments were higher than the statistical model predictions. This enhancement in cross-section indicated the survival of orbiting-like phenomenon at the energy 7 MeV/nucleon. The composite system is also…mehr

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Produktbeschreibung
The dissipative nuclear reaction mechanism in low energy light heavy-ion collisions have been studied. Inclusive energy distributions for various fragments and light charged particles have been measured in a wide angular range in several reactions. In the 20Ne+12C reaction, the fragment yield was mostly from the equilibrium decay of composite system, although the cross-sections for B, C, N fragments were higher than the statistical model predictions. This enhancement in cross-section indicated the survival of orbiting-like phenomenon at the energy 7 MeV/nucleon. The composite system is also deformed. In 20Ne+27Al reaction, both deep-inelastic and fusion-fission processes were found to contribute significantly to the fragment yield. The time scale for the deep-inelastic process was 10-22 seconds. It has been found that the extracted values of angular momentum dissipation were more than the corresponding phenomenological (sticking) limit predictions for light fragments. In addition, in- plane coincidence data gives information about the decay of the hot composite formed 20Ne+12C reaction at 158 MeV.
Autorenporträt
Aparajita had done her Ph.D from University of Calcutta on 2007. Presently she is a Post-Doctoral Fellow at Variable Energy Cyclotron Centre, Kolkata. She spent two and half years at Saha Institute of Nuclear Physics, Kolkata as Research Associate. Aparajita is working on experimental nuclear physics, both reactions and structures.