Abstract
The equation of state of nuclear matter (EOS) is basic information that can be extracted from detailed studies of nucleus-nucleus collisions. Using the MSU 4π Array, we have carried out a series of studies concerning the EOS including the disappearance of collective flow, critical behavior of nuclear matter, the onset of multifragmentation. In the disappearance of flow work, we attempt to extract information about the EOS by making systematic measurements of collective flow and determining the incident energy at which flow disappears. We studied collective flow from the systems C+C, Ne+Al, Ar+Sc, and Kr+Nb at a variety of incident energies. Comparing these results with Boltzmann-Uehling-Uehlenbeck (BUU) calculations, we can extract information about the EOS using an observable that is less sensitive to details of the theoretical calculation. In the critical behavior work, we studied central collisions of Ar+Sc at 15 to 115 MeV/nucleon from which we extracted Z distributions. We related these results to critical phenomena in nuclear matter using a percolation model which we fit to the observed Z distributions and then extrapolated to infinite nuclear matter.
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Westfall, G.D. et al. (1994). The Disappearance of Flow and Critical Behavior in Nucleus-Nucleus Collisions. In: Greiner, W., Stöcker, H., Gallmann, A. (eds) Hot and Dense Nuclear Matter. NATO ASI Series, vol 335. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-2516-5_17
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