Prototype development of ion exchanging alpha detectors

Krupp, Dominik; Scherer, U. W.

doi:10.1016/j.nima.2018.04.038

Cited by 6 publications

(3 citation statements)

References 16 publications

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“…For the chelation method, the areal density of sulfonic acid groups is important. An areal uranium density of about 4 × 10 15 atoms cm −2 is achievable on PIPS detectors functionalized in that way [13]. For SA, the density of oxygen binding partners on the surface of the substrate influences the amount of adsorbed uranium atoms.…”

Section: Theoretical Areal Densitymentioning

confidence: 99%

“…4.4.1 Reagents and materials: An aliquot of the stock solution was diluted to give a solution with a concentration of 38.9 μg mL −1 of 233 U in 0.1 mol L −1 HNO 3 (Merck). Pieces of silicon wafers (300 µm thickness) in various forms with areas of about 6.4 -10 mm 2 , functionalized with sulfonic acid groups according to [13], were used as substrates.…”

Section: Chelation By Sulfonic Acid Groupsmentioning

confidence: 99%

“…Krupp et al developed a method to functionalize silicon surfaces of, e.g. passivated implanted planar silicon (PIPS) detectors for alpha spectrometry [13]. The silicon surfaces are functionalized with sulfonic acid groups, which chelate radionuclides from an acid solution.…”

Section: Introductionmentioning

confidence: 99%

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Alpha spectrometric characterization of thin ²³³U sources for ^229(m)Th production

et al. 2020

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Four different techniques were applied for the production of 233U alpha recoil ion sources, providing 229Th ions. They were compared with respect to a minimum energy spread of the 229Th recoil ions, using the emitted alpha particles as an indicator. The techniques of Molecular Plating, Drop-on-Demand inkjet printing, chelation from dilute nitric acid solution on chemically functionalized silicon surfaces, and self-adsorption on passivated titanium surfaces were used. All fabricated sources were characterized by using alpha spectrometry, radiographic imaging, and scanning electron microscopy. A direct validation for the estimated recoil ion rate was obtained by collecting 228Th recoil ions from 232U recoil ion sources prepared by self-adsorption and Molecular Plating. The chelation and the self-adsorption based approaches appear most promising for the preparation of recoil ion sources delivering monochromatic recoil ions.

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Section: Theoretical Areal Densitymentioning

confidence: 99%

Section: Chelation By Sulfonic Acid Groupsmentioning

confidence: 99%