Accelerator mass spectrometry radiocarbon

AMS 14C dating Abbreviation for accelerator mass spectrometry radiocarbon dating. AMU Acronym for atomic mass unit. 

Bada, J.L., Gillespie, R., Gowlett, J.A.J. and Hedges, R.E.M. (1984). Accelerator mass spectrometry radiocarbon ages of amino acid extracts from Californian Palaeoindian skeletons. Nature 312 442 144. 

Instrumentation AMS - Accelerator Mass Spectrometry Radiocarbon Dating Application Authentication Place Italy... 

Gillespie, R., Hedges, R.E.M. and Wand, J.O. 1984 Radiocarbon dating of bone by Accelerator Mass Spectrometry. Journal of Archaeological Science 11 165-170. 

Soon after this discovery the harnessing of the technique to the measurement of all the U isotopes and all the Th isotopes with great precision immediately opened up the entire field of uranium and thorium decay chain studies. This area of study was formerly the poaching ground for radioactive measurements alone but now became part of the wonderful world of mass spectrometric measurements. (The same transformation took place for radiocarbon from the various radioactive counting schemes to accelerator mass spectrometry.)... 

A more recently developed technique, known as the accelerator mass spectrometry (AMS) radiocarbon dating technique, based on counting, in a mass spectrometer, the relative amount of radiocarbon to stable carbon isotopes in a sample (see Textbox 10). 

Harris, D. R. (1987), The impact on archaeology of radiocarbon dating by accelerator mass spectrometry, Phil. Trans. Roy. Soc. A323, 23-43. 

Valladas, H. (2003), Direct radiocarbon dating of prehistoric cave paintings by accelerator mass spectrometry, Meas. Sci. Technol. 14, 1487-1492. 

The impact of this new technique, which was called Accelerator Mass Spectrometry (AMS), on the radiocarbon and archaeologist communities, was immediate and revolutionary. The introduction of AMS is indeed recognized by some as the third revolution in radiocarbon dating[22,23] and it has provided the opportunity to date very precious finds by collecting very small samples. The interest in developing the technique of AMS was so evident that, just few years after the measurements cited above, a first dedicated AMS system (based on a tandem accelerator) was designed and built [24] then, the first dedicated... 

A. E. Litherland and L. R. Kilius, A recombinator for radiocarbon accelerator mass spectrometry, Nucl. Instrum. Methods B 52, 375 377 (1990). 

Currie, L. A., Klouda, G. A., Elmore, D., Ferraro, R., Gove, H., Accelerator Mass Spectrometry and Electromagnetic Isotope Separation for the Determination of Natural Radiocarbon at the Microgram Level (in preparation). 

Hedges, R.E.M. and J.A.J. Gowlett Radiocarbon Dating by Accelerator Mass Spectrometry," Sci Amer., 100-107 (January 1986). 

XPS will aid in understanding specifically the surface of the black deposit covering pictographs in Little Lost River Cave in Idaho. This work will complement other bulk analyses carried out with pyrolysis-GC-MS and thermally assisted hydrolysis /methylation (THM)-GC-MS (75). The objectives of this project were to use XPS to qualitatively determine the surface elemental composition of the black residue semiquantitatively characterize the surface, for comparison with other surface-related materials and examine the relationship between the chemistry and depth by using Ar+ sputtering. This, then, will aid in validating the radiocarbon date obtained through plasma-chemical oxidation and accelerator mass spectrometry by Steelman et al. (5). 

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