Ams dating technique
The Problem: Accelerator mass spectrometry (AMS), a sensitive radiometric dating technique, is in some cases finding trace amounts of radioactive carbon-14 in coal deposits, amounts that seem to indicate an age of around 40,000 years.
But I only use a milliliter at a time - the concept of 800 tons really boggles the mind! So, the physics community has gotten interested in finding out whether and why fossil fuels have native radioactivity. The aim is to find fossil fuels that have a or less; below that, neutrino activity can be reliably detected. The Borexino detector, and other planned detectors of this type, must keep native beta emissions to below 1 count per ton of fluid per week to reliably detect solar neutrinos. Accelerator Mass Spectrometry (AMS) is an ultra-sensitive method for analysing isotopes.ANSTO's AMS capabilities contribute to national and international research in environmental science, climate variability and archaeology.