Currie detection limits in gamma-ray spectroscopy

Geer, Lars‐Erik De

doi:10.1016/j.apradiso.2004.03.037

Cited by 56 publications

(31 citation statements)

References 3 publications

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“…10 Beside detection limit, which is a characteristic of a measurement, Currie given a concept of third detection limit, "determination limit", LQ, above which the precision of a measurement can be made good enough. The relationship between determination limit LQ and detection limit CDL can be approximated by 16 …”

Section: Methodsmentioning

confidence: 99%

“…The parameters that improve the detection limits of various X-ray spectrometric techniques, such as PIXE, WDXRF, synchrotron excited XRF and γ-ray spectroscopy, have been discussed thoroughly by several workers. [16][17][18][19] Furthermore, it has also shown that in X-ray tube excited XRF, the detection limit can be improved by properly selecting the primary filters. 20 Moreover, a more elaborate theoretical description for detection limit calculation in TXRF with various modes of analysis, viz.…”

Section: Introductionmentioning

confidence: 99%

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Sample Preparation for Evaluation of Detection Limits in X-ray Fluorescence Spectrometry

2005

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sample Preparation for Evaluation of Detection Limits in X-ray Fluorescence Spectrometry

2005

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“…The problem is also well known in the health physics/gamma-ray spectroscopy eld, see e.g. [1,9,10,18,19].…”

Section: Single-channel Poisson Modelmentioning

confidence: 99%

A real-time statistical alarm method for mobile gamma spectrometry—Combining counts of pulses with spectral distribution of pulses

Kock

Lanke

Samuelsson

2012

Nuclear Instruments and Methods in Physics Research Section A:

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A well-founded decision needs to take into account as much information from a sample as possible. In gamma spectrometry, the number of photons and their energy are the two quantities readily accessible to the physicist and both should be used in order to increase the power of a statistical test.While the problem of counts of pulses has been much studied the problem of spectral distribution of pulses has been generally overlooked. This work presents a statistical test combining tests on count rate and tests on spectral distribution. The proposed method is shown to have an acceptable false positive rate and, when compared with two other test statistics found in the literature, greater power.

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“…Treating this by using a weighted mean rather than by least squares has been considered by Vivier et al (2012). Values of k 1−α = 3 and k 1−β = 1.645 were used for the quantiles of the normal distribution; the larger k 1−α value was used in order to prevent finding too many non-significant peaks (De Geer, 2004).…”

Section: Appendix a Details Of Gamma-ray Spectrometric Analysis With mentioning

confidence: 99%

Does the Fukushima NPP disaster affect the caesium activity of North Atlantic Ocean fish?

Kanisch¹,

Aust²

2013

Biogeosciences

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Fillet samples of marine fish collected from the East/West Greenland currents (GC) and from the Baltic Sea (BS) have been investigated by gamma-ray spectrometry within the regular German monitoring programme. In samples of the second half of 2011, ¹³⁴Cs traces have been detected that are suggested to originate from the Fukushima fallout that was deposited in March/April 2011 over the northern North Atlantic and accumulated by fish. The radionuclide ¹³⁴Cs (half-life 2 yr) was indeed detected with quite small activities at about 0.0036 Bq kg⁻¹ w.w. Existing box models describing the transport of Cs within seawater boxes of the northeast Atlantic allowed for estimation of ¹³⁴Cs contributions from other sources, i.e. from the Chernobyl fallout and from discharges by the two major European nuclear reprocessing plants; both were negligible around Greenland, while for the Chernobyl fallout a small ¹³⁴Cs background contribution to BS fish was estimated. Model results confirmed the level of ¹³⁴C measured in BS fish and showed its maximum to have occurred in winter 2011/2012 followed by a continuous decrease. It was also determined that ¹³⁴Cs activity, but not that of ¹³⁴Cs, showed a significant negative correlation with sampling depth (150–400 m) of GC fish; this strengthens our Fukushima fallout assumption. As a result, the Fukushima fallout in these sea areas only marginally enhanced (GC: 4%; BS: 0.1%) pre-Fukushima levels of individual dose rates received by human fish consumers; the addition was around 0.001 μSv following the consumption of 10 kg of fish per year, which is not expected to cause concern according to present guidelines for radiation protection

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Currie detection limits in gamma-ray spectroscopy

Cited by 56 publications

References 3 publications

Sample Preparation for Evaluation of Detection Limits in X-ray Fluorescence Spectrometry

Sample Preparation for Evaluation of Detection Limits in X-ray Fluorescence Spectrometry

A real-time statistical alarm method for mobile gamma spectrometry—Combining counts of pulses with spectral distribution of pulses

Does the Fukushima NPP disaster affect the caesium activity of North Atlantic Ocean fish?

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