accelerator mass spectrometry


Also found in: Dictionary, Acronyms, Encyclopedia, Wikipedia.

accelerator mass spectrometry

A specialised form of mass spectrometry used for low-level analysis of 14C isotopes in radiocarbon dating and biological tracer studies, in which atomic ions are formed from the sample by charge-stripping in a very high-voltage source, typically coupled to a Van de Graff accelerator.
References in periodicals archive ?
(8) The advent of accelerator mass spectrometry, as discussed in Sec.
To calibrate the [[blank].sup.14]C/[[blank].sup.13]C readings from tandem accelerator mass spectrometry (TAMS), we used samples from all of our Pectocarya accessions with known age (21 samples, 1988-1995) supplemented for the earlier years with seeds of Plantago (7 samples, 1983-1988).
Next, the graphite took a trip to a Swiss research facility where scientists analyzed it by accelerator mass spectrometry, which precisely compared the relative amounts of radioactive and stable carbon isotopes.
Tenders are invited for this work requires an expert in the field of cosmogenic isotope geochemistry, including sample preparation, sample purity testing using laser ablation inductively coupled plasma mass spectrometry (la-icpms), and isotope measurement using low-level accelerator mass spectrometry (ams).
Using LLNL's Center for Accelerator Mass Spectrometry, Buchholz measured the amount of carbon 14 in DNA in beta cells and discovered that after age 30, the body does not create any new beta cells, thus decreasing the capacity to produce insulin as a person ages.
Today the Centre for Accelerator Science operates four accelerators for IBA and Accelerator Mass Spectrometry (AMS), which are used for a vast array of applications.
An AMS (Accelerator Mass Spectrometry) date on the ash deposit obtained from the Beta Analytic Inc., Miami, Florida place the site within Circa Cal.
Projects undertaken using accelerator mass spectrometry, X-ray techniques and neutron scattering are captured in an article about the Amazing jobs at ANSTO.
Using the Lab's Center for Accelerator Mass Spectrometry, they carbon dated the deposits in the sediment and reconstructed fire occurrences from 15,000 B.C.