ACCELERATOR MASS-SPECTROMETRY AT THE LUND PELLETRON ACCELERATOR

Three years ago, funds were raised to equip the 3 MV Pelletron accelerator at the Department of Physics, Lund University for accelerator mass spectroscopy (AMS). We have modified the accelerator for mass spectroscopy by relocating focusing devices on both the low- and high-energy side of the accelerator and installing a Wien velocity filter and detectors for measuring the particle energy (E) and energy loss (DELTAE). We have been working exclusively with C-14 during the initial period. About 40 samples of elemental carbon have been produced, using Fe or Co as catalyst, during the last two years. The C-12- current from these samples is about 3-5 muA, using an ANIS sputtering source. We are now planning C-14 analyses in the fields of archaeology, Quaternary geology and radioecology.