Instrument: Accelerator Mass Spectrometer

Instrument Short Name: AMS
(http://vocab.nerc.ac.uk/collection/L05/current/LAB17/)
Instrument Description:

An AMS measures "long-lived radionuclides that occur naturally in our environment. AMS uses a particle accelerator in conjunction with ion sources, large magnets, and detectors to separate out interferences and count single atoms in the presence of 1x1015 (a thousand million million) stable atoms, measuring the mass-to-charge ratio of the products of sample molecule disassociation, atom ionization and ion acceleration." AMS permits ultra low-level measurement of compound concentrations and isotope ratios that traditional alpha-spectrometry cannot provide. More from Purdue University: http://www.physics.purdue.edu/primelab/introduction/ams.html

PI supplied instrument name: Accelerator mass spectrometry
Dataset-specific description

Accelerator mass spectrometry 14C dating was performed by DirectAMS in Bothell, WA, United States.