Measurement Of Excitation Functions In The Reactions (197)Au((11)C, Xn)(208-X)At Using A Radioactive (11)C Beam

A light-element radioactive ion-beam capability has been developed at the LBNL 88-Inch Cyclotron. The system is based on the coupled-cyclotrons method and utilizes short-lived species, e.g., (11)C, (14)O, (13)N produced by (p, II) and (p, alpha) reactions at the LBNL Biomedical Isotope Facility Cyclotron. In a first experiment, (197)Au((11)C, xn)(208-x) At excitation functions have been measured for energies ranging from the Coulomb barrier up to 110 MeV using a beam of (11)C with intensities up to (1-2) x 10(8) ions/sec on target. The results of this experiment are compared to measurements of (197)Au((12)C, xn)(209-x) At excitation functions.