Colliding Drops and Nuclei Revisited

Physics – Nuclear Physics

Scientific paper

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Scientific paper

We have constructed an apparatus to observe the collisions between drops of various liquids as a function of the drop size,velocity,impact parameter,viscosity and other key parameters using direct digital video recording. The latter allows an accurate frame-by-frame analysis of the collisions. The choice of the liquid (Weber number in particular) together with the impact parameter and velocity determine the characteristics of the collisions, including those which resemble nuclear collisions. Both low- and high-impact parameter collisions have been simulated and show the features typical of many heavy ion collisions. However some new features are also observed. Other collisions involving different liquids resemble the collisions of other systems, such as galaxies and, perhaps, neutron stars. The results are compared with the recent work of Menchaca-Rocha et al using mercury drops on flat surfaces[ Adv.in Nuclear Dynamics 2(1996)299] and data taken in recent NASA space shuttle missions in a zero-g environment[Science News 151(1997)242]

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