Neutron-proton asymmetry of the midvelocity material in an intermediate-energy heavy-ion collision - art. no. 031603

The n-p asymmetry of the material found in the midvelocity or "neck" region of an intermediate energy heavy-ion reaction is determined. In order to ac complish this task, data from two different experiments are utilized. While the n-p asymmetry of the light particles (Z less than or equal to 2) is en riched in neutrons relative to the bulk matter, the total material found at midrapidity has an asymmetry indistinguishable from that of the entire sys tem.