Source preparation in alpha spectrometry

Lally, A.E.; Glover, K.M.

doi:10.1016/0167-5087(84)90658-6

Cited by 58 publications

(11 citation statements)

References 8 publications

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“…During the electrodeposition step, mixed radionuclides of 238 U, 234 U, 239 Pu, and 241 Am are deposited onto the surface of the steel planchet as hydrous oxides typically as U(OH) 4 , Pu(OH) 3 , and Am(OH) 4 , respectively. The morphologies of the radioactive sources on the steel planchet obtained by the electrodeposition method under various magnetic flux densities were studied by scanning electron microscope (SEM, JEOL JSM-6700F).…”

Section: Resultsmentioning

confidence: 99%

“…Various techniques for preparing radioactive sources have been reviewed [3,7], among which electrodeposition, in which a radioactive material dissolved in an electrolyte solution is electrodeposited on a cathode (source support) by passing an electric current, is commonly used to prepare ultrathin solid radioactive sources [9][10][11][12][13][14][15][16][17]. The advantages of this source preparation method include high deposition yields (99.8%) and high qualities of the sources obtained with simple and inexpensive equipment [7], which make it the most common method of radioactive source preparation.…”

Section: Introductionmentioning

confidence: 99%

“…The final accuracy of a radioactivity measurement depends strongly on the quality of the prepared radioactive sources [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Preparation of alpha sources using magnetohydrodynamic electrodeposition for radionuclide metrology

Panta

Farmer

Johnson

et al. 2010

Journal of Colloid and Interface Science

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preparation of alpha sources using magnetohydrodynamic electrodeposition for radionuclide metrology

Panta

Farmer

Johnson

et al. 2010

Journal of Colloid and Interface Science

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“…In our laboratory we have experiences in analyzing uranium and thorium in acid extract solutions of spices [54]. Our method is based on working sheets from the Paul Scherrer Institute (PSI), which describes the production of a homemade electrodeposition unit and the application for the enrichment of uranium or thorium on stainless steel planchettes [51,[55][56][57][58]. Frindik et al give a method for the determination of many alpha nuclides, including such as plutonium and americium [59].…”

Section: Adsorptive Surfacesmentioning

confidence: 99%

Monitoring of Natural Radioactivity in Drinking Water and Food with Emphasis on Alpha-Emitting Radionuclides

Zehringer¹

2020

Ionizing and Non-Ionizing Radiation

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Alpha spectrometry is an indispensable technique in the radiology lab for the analysis of natural radionuclides. While the powerful ICP/MS is used more and more for the analysis of uranium and thorium, other radionuclides, such as 226 Ra, are difficult to analyze with this technique due to their very high specific activities. The following chapter is introduced by a description of the problems, which may occur when working in the ultra-trace level. A description of the commonly used extraction and enrichment techniques for alpha nuclides and a short survey of the commonly applied detection techniques are given. The main application of alpha spectrometry in our laboratory is the monitoring of tap and mineral waters. Besides water, some specific food categories, such as fish, seafood, spices or healing earths, are monitored for their content of natural radionuclides. Monitoring of Natural Radioactivity in Drinking Water and Food with Emphasis… DOI: http://dx.doi.org/10.5772/intechopen.90166 * Activity limits according to ordinance on drinking water and water for public baths and shower facilities (TBDV) [7].

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“…However, achieving α-spectrometry analysis requires a chemically and radiochemically pure actinide solution. Even the metallic element traces if not completely removed, result in both a degradation of the spectrometric quality of the spectrum and a diminution of the electrodeposition yield process undertaken for alpha source preparation [12][13][14][15]. Iron is one of these undesirable impurities, because of its contribution to the thickness of the deposit and inhibiting property of the deposition of actinides.…”

Section: Introductionmentioning

confidence: 99%

Preparation of U(VI) and Th(IV) alpha-sources from sea and fresh water samples by combining coprecipitation, solvent extraction and electrodeposition procedures

Zarki¹,

El-Yahyaoui²,

Chiadli³

2004

Radiochimica Acta

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Uranium / Thorium / Sea water / Fresh water / Coprecipitation / Iron hydroxides / Solvent extraction / Electrodeposition / α-particle spectrometry Summary. A simple method combining coprecipitation, solvent extraction and electrodeposition for determining uranium and thorium in sea water and fresh water samples is developed. It offers a considerable saving in time, minimising chemical treatment and costs. The analytical procedure consists of enrichment of U and Th by coprecipitation with iron(III) hydroxides and subsequent extraction by diethylether solution and electrodeposition of each actinide in the extracting organic phase in which it was separated.The dependence of the coprecipitation, the extractionelectrodeposition and the overall yields of the above mentioned elements is examined in relation to the initial aqueous solution acidity and various amounts of iron carrier. At an initial pH between 6 and 10, quantitative coprecipitation of U and Th requires use of an Fe(III) quantity which depends on the acidity of these solutions. This quantity varies, under explored conditions, between 10 and 110 mg/L. At a starting pH of 11, this coprecipitation becomes almost independent of Fe(III) amounts.The proposed procedure was used to analyse the content of U and Th isotopes in water samples. Recoveries of 60%-93% are obtained for uranium and 63%-86% for thorium. Good resolutions (37-56.5 keV) are also achieved under optimum conditions. These resolutions allow to make accurate determination of U and Th isotopes in various water samples.

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Source preparation in alpha spectrometry

Cited by 58 publications

References 8 publications

Preparation of alpha sources using magnetohydrodynamic electrodeposition for radionuclide metrology

Preparation of alpha sources using magnetohydrodynamic electrodeposition for radionuclide metrology

Monitoring of Natural Radioactivity in Drinking Water and Food with Emphasis on Alpha-Emitting Radionuclides

Preparation of U(VI) and Th(IV) alpha-sources from sea and fresh water samples by combining coprecipitation, solvent extraction and electrodeposition procedures

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