Search

We present some of the latest results from the E895 experiment conducted at the BNL AGS accelerator. Au+Au collisions were recorded by the EOS Time Projection Chamber (TPC) at beam energies of 2, 4, 6, and 8 A GeV. The TPC detector permitted the reconstruction of individual collision events with almost 4π acceptance and good particle identification. This capability allowed E895 to study global observables and two particle correlations with respect to symmetries of the event. Flow excitation functions are examined and discussed in the context of the Nuclear Equation of State.

The E895 experiment has undertaken a systematic and exclusive study of Au+Au collisions between 2–8 A GeV. Complete event-by-event data were obtained using the EOS time projection chamber (TPC) which provided good particle identification and continuous tracking over almost 4π solid angle. In central Au+Au collisions at 6 A GeV, the proton rapidity distribution indicates almost complete stopping, hence high baryon density. We present preliminary results on collective flow observables as a function of beam energy. Data are compared with theoretical predictions.

The spin-isospin flip ( 6 Li, 6 He) reaction has been studied. The experiment was performed with a 34 MeV 6 Li beam incident upon 25, 26 Mg and 27 Al targets. Angular distributions associated with the lowest 5 2 + , 1 2 + , 7 2 + 25 Al , 5 + , 3 + , 1 + 26 Al and 5 2 + 27 Si states were measured. Microscopic DWBA calculations were performed using Yukawa central and r 2 . Yukawa ( r 2 · Y ) tensor ( μ = 1.0 fm −1 ) potentials averaged over the 6 Li( 6 He) cluster model wave functions. Knock-on (KO) exchange corrections corresponding to the central interaction are included using the local-energy approximation (LEA) method. The conclusion is that the quasi-elastic process is of major importance in the ( 6 Li, 6 He) transition studied in this work.