Study of very neutron-rich isotopes produced in 136Xe + 12C collisions at E(Xe) = 30-MeV/nucleon

The UM 7-Tesla superconducting solenoid at NSCL has been configured in a 6.4 meter time-of-flight, mode to study the production of very neutron-rich isotopes near θ = 0 degrees with Z ∼ 10 to 40 (A ∼ 30 to 90). A beam of 136Xe24+ at 30 MeV/nucleon was produced at MSU-NSCL and stopped in a thick 12C target. A position-sensitive PPAC detector at the entrance to the magnet provided a fast start signal (Δt ≤ 500ps) and the fragment emission angle. It was used in conjunction with a position-sensitive S exclamation point detector telescope located at the solenoid focal plane. Approximately 200 hundred neutron rich nuclei approaching the neutron drip line were observed and identified. Angular distributions were measured from 1 degrees to 7 degrees(lab). Useable (few/s to 100's/s) secondary, neutron-rich beams (Z≥ 20) were also produced