Pankaj Sharma, David Elmore, Thomas Miller, Stephan Vogt

Nuclear Instruments and Methods 123 (1997) 347-351

The current status of sample preparation activities and AMS determination of ¹²⁹I ratios are described. A system background of 20-80 x 10^-15 of ¹²⁹I/I ratio has been achieved without a time-of-flight (TOF) detector and without a low-energy electrostatic deflector. An intercomparison of ¹²⁹I ratios for AgI samples obtained from other AMS facilities and for the round robin exercise by the International Atomic Energy (IAEA) show an excellent agreement. Potential applications of ¹²⁹I for tracing groundwater and ocean water are discussed.