Standardization and half-life of 201Tl by the 4π(x,e)-γ coincidence method with liquid scintillation counting in the 4π-channel

Simpson, B.R.S.; Meyer, B.

doi:10.1016/0969-8043(94)90245-3

Cited by 13 publications

(3 citation statements)

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“…In addition, the characteristics of the pulses allow the resolving time to be reduced. Generally, the β-channel apparatus consists of two or three photomultipliers operating in coincidence; the efficiency extrapolation method can be carried out according to several techniques: by changing the high voltage [49], by defocusing the photomultipliers [50] or by variation of the discrimination threshold [51]. A geometry-efficiency variation technique has also been described in [52].…”

Section: The Extrapolation Methods In Practice and Instrumentationmentioning

confidence: 99%

“…Non-linearities can also be encountered when measuring triangular decay-scheme radionuclides; these radionuclides have a decay-branch direct to the ground state from which no coincidences can be measured (for instance 51 Cr, 65 Zn, 201 Tl). As a consequence, a correction has to be applied to the activity value given by the efficiency extrapolation method [32][33][34].…”

Section: Non-linearitiesmentioning

confidence: 99%

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Primary standardization of activity using the coincidence method based on analogue instrumentation

Bobin¹

2007

Metrologia

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Widely implemented at national metrology institutes (NMIs), the coincidence method is a technique to assay a wide variety of radionuclides which decay through two or more types of radiation. Through a survey of the literature, this paper seeks to describe the main aspects of one of the most powerful direct methods available in radionuclide metrology. The basics of coincidence counting and the efficiency extrapolation method are covered. The problem of non-linearities in the extrapolation curve is also considered. The main characteristics of variants to the conventional coincidence instrumentation are presented.

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Section: The Extrapolation Methods In Practice and Instrumentationmentioning

confidence: 99%

Section: Non-linearitiesmentioning

confidence: 99%

Primary standardization of activity using the coincidence method based on analogue instrumentation

Bobin¹

2007

Metrologia

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“…Other separations of 20, T1 from Tl, Pb and Bi targets were reported [204,205], Simpson et al [206] used liquid scintillation counter to standardize 20, T1. 212 …”

Section: Smentioning

confidence: 99%

Radionuclide Generators

Lambrecht

Tomiyoshi

Sekine³

1997

Radiochimica Acta

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The present status and future directions of research and development on radionuclide generator technology are reported. The recent interest to develop double-neutron capture reactions for production of in vivo generators; neutron rich nuclides for radioimmunotherapeutic pharmaceuticals; and advances with ultrashort lived generators is highlighted. Emphasis is focused on: production of the parent radionuclide; the selection and the evaluation of support materials and eluents with respect to the resultant radiochemical yield of the daughter, and the breakthrough of the radionuclide parent; and, the uses of radionuclide generators in radiopharmaceutical chemistry, biomedical and industrial applications. The 62 Zn -62 Cu, ^Ni -""Cu, ,03m Rh -• ,03 Rh, ,88 W -• ,88 Re and the 225 Ac -22, Fr -2l3 Bi generators are predicted to be emphasized for future development.

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Liquid Scintillation Analysis

L’Annunziata¹,

Kessler²

2012

Handbook of Radioactivity Analysis

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Standardization and half-life of 201Tl by the 4π(x,e)-γ coincidence method with liquid scintillation counting in the 4π-channel

Cited by 13 publications

References 9 publications

Primary standardization of activity using the coincidence method based on analogue instrumentation

Primary standardization of activity using the coincidence method based on analogue instrumentation

Radionuclide Generators

Liquid Scintillation Analysis

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