A Comparison of the In-Situ Measurement of Terrestrial Americium with a Ge(Li) Spectrometer and a Fidler

The evaluation of the sensitivity of a Ge(Li) coaxial detector in comparison with a thin NaI(Tl) detector in in situ terrestrial 241Am is described. The experiment was performed in areas of natural background and fallout products. Of primary concern is the detection of 241Am 60 keV gamma ray. Calculated from these data are the corresponding quantitations of 239,240Pu.