Direct measurement of xenon-127 activity with a 4π - γ detector

Vatin, R.; Chauvenet, B.

doi:10.1016/0883-2889(87)90170-5

Cited by 6 publications

(3 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…High-efficiency photon detection systems, such as a large well-type NaI(Tl) detector, are commonly applied for 4πγ counting [46][47][48][49][50][51][52][53][54][55][56][57]. Alternative set-ups may consist of two NaI(Tl) detectors sandwiching a source, or also a CsI(Tl) sandwich spectrometer, as discussed below.…”

Section: πγ Countingmentioning

confidence: 99%

Methods for primary standardization of activity

Pommé

2007

Metrologia

View full text Add to dashboard Cite

show abstract

Section: πγ Countingmentioning

confidence: 99%

Methods for primary standardization of activity

Pommé

2007

Metrologia

View full text Add to dashboard Cite

show abstract

“…The method is not restricted to point sources, since volume sources can be measured also: for example 127 Xe gas can be standardized in an ampoule [18]. Self-absorption in such voluminous sources is an important issue that needs to be addressed with care.…”

Section: Photonsmentioning

confidence: 99%

Assessment of the uncertainty budget associated with 4πγcounting

et al. 2015

View full text Add to dashboard Cite

The 4πγ-counting technique is recognized as a powerful primary method for the standardization of radionuclides decaying with abundant gamma emissions. Based on the use of a gamma detector in quasi 4π-geometry, a detection efficiency close to 100% and a low uncertainty can be achieved thanks to the summing effect of subsequent gamma transitions. Uncertainties have to be assigned to the realistic modelling of the source-detector geometry with respect to dimensions, density and material composition, the calculation of the total counting efficiency of the detector for the various emitted radiation, and the effect of possible flaws in the decay scheme of a radionuclide on the calculated total efficiency. Other uncertainty factors pertain to typical metrological sources of uncertainty, such as weighing, nuclear counting with pulse pile-up and system dead-time effects, impurity corrections, decay corrections, timing and frequency, etc. In order to ensure good metrological practices at NMIs, the uncertainties particular to the method are discussed.

show abstract

“…In this study, 127 Xe was standardized by internal gas counting using three proportional counters in a differential arrangement to eliminate end effects. A measurement using 4πγ detector can also be used (Vatin and Chauvenet, 1987) but we think that gas counting leads to more direct results.…”

Section: Standardization Using Triple Gas Countersmentioning

confidence: 99%

Standardization of xenon-127 and measurement of photon emission intensities

Rodrigues

Lépy

Cassette

et al. 2014

Applied Radiation and Isotopes

View full text Add to dashboard Cite

Xenon-127 was standardized by internal gas counting using three proportional counters in a differential arrangement to eliminate edge effects. The detection efficiency of the proportional counters was calculated by considering the cascade of events following the electron capture and associated gamma transitions. Activity per unit volume was measured with 0.7% relative standard uncertainty. Gamma-ray spectrometry was performed and absolute photon emission intensities were derived. This study shows that (127)Xe could be a surrogate for (133)Xe for the calibration of remote radio-xenon monitoring stations.

show abstract

Direct measurement of xenon-127 activity with a 4π - γ detector

Cited by 6 publications

References 1 publication

Methods for primary standardization of activity

Methods for primary standardization of activity

Assessment of the uncertainty budget associated with 4πγcounting

Standardization of xenon-127 and measurement of photon emission intensities

Contact Info

Product

Resources

About