The Keck Carbon Cycle AMS Laboratory, University of California, Irvine: Initial Operation and a Background Surprise
Open accessAbstract
A new radiocarbon accelerator mass spectrometry (AMS) laboratory for carbon cycle studies has been established at the University of California, Irvine. The 0.5MV AMS system was installed in mid-2002 and has operated routinely since October of that year. This paper briefly describes the spectrometer and summarizes lessons learned during the first year of operation. In the process of setting up the system, we identified and largely suppressed a previously unreported 14 C AMS background: charge exchange tails from 14 N beams derived from nitrogen-containing molecular ions produced near the entrance of the accelerator.
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The data in Figures 4A and 4B are typical of current measurements from the KCCAMS AMS system at UC Irvine.
“The data illustrated in these plots are typical of that currently being obtained on the AMS system described in Figure 1 and Table 1 operating at the KCCAMS laboratory at the University of California, Irvine (Southon et al. 2004;Santos et al. 2007).”
From Misunderstandings Concerning the Significance of AMS Background <sup>14</sup>C Measurements (2018) · cites this paper as Southon et al. 2004
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Research works printed but not linked: 4
- Goslar T, Czernik J, Goslar E. Forthcoming. Low-energy 14 C AMS in Poznan Radiocarbon Laboratory, Poland. Proceedings of the 9th International Conference on AMS. Nuclear Instruments and Methods in Physics Research B.
- Gove HE, editor. Proceedings of the 1st Conference on Radiocarbon Dating with Accelerators. Rochester: University of Rochester. p 152-5.
- Roberts ML, Culp RA, Dvoracek DK, Hodgins GWL, Neary MP, Noakes JE. Forthcoming. The compact 14 C AMS system at the University of Georgia. Proceed- ings of the 9th International Conference on AMS. Nu- clear Instruments and Methods in Physics Research B.
- Southon JR, Santos GM. 2004. Ion Source Development at KCCAMS, University of California, Irvine. Radio- carbon, these proceedings.
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Kramer, C., Trumbore, S., Fröberg, M., Cisneros Dozal, L. M., Zhang, D., Xu, X., Santos, G. M., & Hanson, P. J. (2010) · Soil Biology and Biochemistry · doi:10.1016/j.soilbio.2010.02.021 · Cited by 138 · see citing works
Self-citationUse of natural diamonds to monitor 14C AMS instrument backgrounds
Taylor, R. E., & Southon, J. (2007) · Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms · doi:10.1016/j.nimb.2007.01.239 · Cited by 13 · see citing works
Self-citationMisunderstandings Concerning the Significance of AMS Background <sup>14</sup>C Measurements
Taylor, R. E., Southon, J. R., & Santos, G. M. (2018) · Radiocarbon · doi:10.1017/rdc.2018.15 · Cited by 3 · see citing works
Self-citation
- Authors
- Southon, J., Santos, G., Druffel-Rodriguez, K., Druffel, E., Trumbore, S., Xu, X., Griffin, S., Ali, S., & Mazon, M.
- Affiliations
- University of California, Irvine (US)
- Lamont-Doherty Earth Observatory (US)
- California State University, Fullerton (US)
- Venue
- Radiocarbon
- Publisher
- Cambridge University Press (CUP)
- Published
- 2004
- Volume
- 46
- Issue
- 1
- Pages
- 41-49
- ISSN
- 0033-8222 (ISSN-L)
- 1945-5755
- OpenAlex
- W2103186942
- Cited by
- 142
- References
- 0
- Citations by year
- 2026: 3 · 2025: 7 · 2024: 6 · 2023: 3 · 2022: 5 · 2021: 2 · 2020: 2 · 2019: 8 · 2018: 5 · 2017: 11 · 2016: 6 · 2015: 6 · 2014: 5 · 2013: 9 · 2012: 4
- FWCI
- 6.47
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Radiocarbon (publishedVersion)
- UA Campus Repository (The University of Arizona) (acceptedVersion)
- eScholarship (California Digital Library) (submittedVersion, cc-by)
- eScholarship (California Digital Library) (submittedVersion)
- MPG.PuRe (Max Planck Society) (submittedVersion, other-oa)
- Funders
- W. M. Keck Foundation
- University of California, Irvine
- Lawrence Livermore National Laboratory
- Topics
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Archaeology and ancient environmental studies
- Physical Sciences › Engineering › Aerospace Engineering › Particle accelerators and beam dynamics
- Physical Sciences › Physics and Astronomy › Radiation › Radioactive Decay and Measurement Techniques
- Keywords
- carbon cycle, spectrometer operation
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