Reassessment of Uncertainty Expansion by Linear Addition of Long-Term Components From Top-Down Information
Bibliographic Data
| ID | 9246153 |
|---|---|
| Authors | Gary Salazar (0000-0002-0425-5997), S Szidat |
| Year | 2021 |
| Volume | 63 |
| Issue | 6 |
| Pages | 1657-1671 |
| Publication date | 2021-12-01 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Radiocarbon (JOURNAL) |
| Journal identifiers | ISSN: 0033-8222 • E-ISSN: 1945-5755 |
| Publisher | Cambridge University Press (CUP) (PUBLISHER) |
| DOI | 10.1017/rdc.2021.96 |
| OpenAlex | W3216834509 |
| Language | EN |
| Citations received | 2 |
| References cited | 28 |
Since radiocarbon accelerator mass spectrometry ( 14 C AMS) is considered a high-precision technique, reassessment of the measurement uncertainty has been a topic of interest. Scientists from analytical and metrological fields have developed the top-down and bottom-up measurement of uncertainty approaches. The 14 C quoted error should approximate the uncertainty of long-term repetitions of the top-down approach in order to be realistic. The novelty of this paper is that the uncertainty of both approaches were approximated to each other. Furthermore, we apportioned the graphitization, instrumentation, and bias components in order to additively expand the quoted error. Our results are comparable to error multipliers and to long-term repeatability studies reported by other laboratories. Our laboratory was established in late 2012 with N 2 as stripper gas and 7 years later, we changed to helium stripper. Thus, we were able to compare both gases, and demonstrate that helium is a better stripper gas. In absolute F 14 C units, the ranges of graphitization+bias combined uncertainties were (0.7 to 4.1) × 10 –3 for N 2 and (0.7–3.0) × 10 –3 for He depending on the standard 14 C content. The error multiplier for He defined as the expanded uncertainty over quoted error, in average, was 1.7; while without the bias, the multiplier was 1.3
Accelerator mass spectrometry · Atomic physics · Chromatography · Helium · Mass spectrometry · Measurement uncertainty · Metrology · Physics · Radiocarbon dating · Repeatability · Statistics · Chemistry · Environmental Science · Mathematics · Nuclear Physics and Applications · Radioactive Decay and Measurement Techniques · Scientific Measurement and Uncertainty Evaluation · Geology
Bats
High-Precision Atmospheric 14 CO 2 Measurement at the Rafter Radiocarbon Laboratory
Radiocarbon Protocols and First Intercomparison Results From the Chronos 14 Carbon-Cycle Facility, University of New South Wales, Sydney, Australia
Pushing the Precision Limit of 14 C AMS
Error and Uncertainty in Radiocarbon Measurements
The Fifth International Radiocarbon Intercomparison (Viri)
An Independent Assessment of Uncertainty for Radiocarbon Analysis With the New Generation High-Yield Accelerator Mass Spectrometers
Is there a Fifth International Radiocarbon Intercomparison (Viri)
New 14 C Reference Materials with Activities of 15 and 50 pMC
Initial Results of an Intercomparison of AMS-Based Atmospheric 14 CO 2 Measurements
| Citations per year | 0.67 |
|---|---|
| Citation span | 2023 - 2025 (3) |
| Highly cited | No |