TANDEM ACCELERATOR MASS-SPECTROMETRY AT SHANGHAI - PRESENT STATUS AND APPLICATIONS

Abstract An AMS facility has been installed on the 6 MV tandem accelerator at the Shanghai Institute of Nuclear Research. The main features of this facility are described. During one year's operation, a first set of applications has been performed: some relics of early civilizations have been dated, 10 Be formation cross sections induced by deuterons on 9 Be have been measured, and the 10 Be concentrations in deep sea sediments and manganese nodules collected from the South China Sea and Pacific Ocean respectively have also been measured. Methods employed to reduce the background are discussed.