2,025 research outputs found
Spectator matter fragmentation in Au+Au reactions: Phase space analysis
Clusterization in phase space has been analyzed for peripheral Au+Au
reactions at 1000 AMeV using simulated annealing clusterization algorithm
(SACA). We investigate how these fragments are correlated in phase space and
compare our model calculations with minimum spanning tree (MST) method. Our
theoretical study highlights the importance of binding energy criterion in
recognizing the fragment structure. MST method however, fails to break-up the
spectator matter effectively and thus under-estimates the multiplicity of
intermediate mass fragments (IMFs).Comment: 2 pages, 2 figure
Momentum Dependence of Nuclear Mean Field and multifragmentation in Heavy-Ion Collisions
We report the consequences of implementing momentum dependent interactions
(MDI) on multifragmentation in heavy-ion reactions over entire collision
geometry. The evolution of a single cold nucleus using static soft equation of
state and soft momentum dependent equation of state demonstrates that inclusion
of momentum dependence increases the emission of free nucleons. However, no
heavier fragments are emitted artificially. The calculations performed within
the framework of quantum molecular dynamics approach suggest that MDI strongly
influence the system size dependence of fragment production. A comparison with
ALADiN experimental data justifies the use of momentum dependent interactions
in heavy-ion collisions
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