Basis for developing samarium AMS for fuel cycle analysis

Buchholz, Bruce A.; Biegalski, Steven R; Whitney, Scott M.; Tumey, Scott J.; Weaver, C J

doi:10.1016/j.nimb.2009.10.027

Cited by 4 publications

(3 citation statements)

References 28 publications

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“…The existence of the much shorter-lived 244 Pu (t 1/2 = 8.1×10 7 yr) in a rare-earth mineral has once been reported [12], but still awaits independent experimental verification. The slightly longer-lived 146 Sm (t 1/2 = 1.03×10 8 yr) has not yet been observed in nature, but AMS methods for a sensitive detection of this radionuclide are under development [13,14]. There are no radionuclides known with half-lives between 100 and 700 million years.…”

Section: Introductionmentioning

confidence: 99%

Ultrasensitive search for long-lived superheavy nuclides in the mass rangeA=288toA=300in natural Pt, Pb, and Bi

et al. 2011

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Theoretical models of superheavy elements (SHEs) predict a region of increased stability around the proton and neutron shell closures of Z = 114 and N = 184. Therefore a sensitive search for nuclides in the mass range from A = 288 to A = 300 was performed in natural platinum, lead, and bismuth, covering long-lived isotopes of Eka-Pt (Ds, Z = 110), Eka-Pb (Z = 114), and Eka-Bi (Z = 115). Measurements with accelerator mass spectrometry (AMS) at the Vienna Environmental Research Accelerator (VERA) established upper limits for these SHE isotopes in Pt, Pb, and Bi with abundances of <2×10 −15 , <5×10 −14 , and <5×10 −13 , respectively. These results complement earlier searches for SHEs with AMS at VERA in natural thorium and gold, which now amounts to a total number of 37 SHE nuclides having been explored with AMS. In none of our measurements was evidence found for the existence of SHEs in nature at the reported sensitivity level. Even though a few events were observed in the window for 293 Eka-Bi, a particularly strong pileup background did not allow a definite SHE isotope identification. The present result sets limits on nuclides around the center of the island of stability, essentially ruling out the existence of SHE nuclides with half-lives longer than ∼150 million years.

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Section: Introductionmentioning

confidence: 99%

Ultrasensitive search for long-lived superheavy nuclides in the mass rangeA=288toA=300in natural Pt, Pb, and Bi

et al. 2011

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“…Precision, accuracy, interferences and cost were all discussed, as were methods employed to improve them. 195 The isotopes 146 Sm, 149 Sm and 151 Sm are potential signatures of fuel reprocessing, but unfortunately, they require accurate isotopic information to be obtained, which can be problematic, since the analytical techniques have to overcome the inherent challenges of lanthanide chemistry, isobaric interferences and mass/charge interferences. A second review focussed on the determination of 241 Am using techniques such as alpha spectrometry, gamma spectrometry, liquid scintillation counting and mass spectrometry.…”

Section: Nuclear Materialsmentioning

confidence: 99%

“…The final review pertinent to this section was prepared by Buchholz and colleagues, and concentrated on the current limitations in measurement of Sm isotopes and described potential approaches for developing Sm-accelerator mass spectrometry (AMS). 195 The isotopes 146 Sm, 149 Sm and 151 Sm are potential signatures of fuel reprocessing, but unfortunately, they require accurate isotopic information to be obtained, which can be problematic, since the analytical techniques have to overcome the inherent challenges of lanthanide chemistry, isobaric interferences and mass/charge interferences. The review of limitations and methods used to overcome them contained 37 references.…”

Section: Reviews and Overviewsmentioning

confidence: 99%

Atomic spectrometry update. Industrial analysis: metals, chemicals and advanced materials

Carter

Fisher

Goodall

et al. 2011

J. Anal. At. Spectrom.

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Metals 1.1 Ferrous metals and alloys 1.2 Non-ferrous metals and alloys 2 Chemicals 2.1 Petroleum and petroleum products 2.1.1 Petroleum products -gasoline, diesels, gasohol, exhaust particulates 2.1.2 Fuel -coal, fly ash, particulates/emissions 2.1.3 Oils -crude oil, lubricants 2.1.4 Alternative fuels 2.2 Organic chemicals and solvents 2.2.1 The analysis of archaeological and art objects 2.2.2 LIBS and other laser techniques 2.2.3 Mass spectrometric techniques 2.2.4 Ion beam techniques 2.2.5 Speciation 2.2.6 Extraction, preconcentration and sample introduction 2.3 Inorganic chemicals and acids 2.3.1 Reviews, overviews and CRMs 2.3.2 Cements, concretes and plasters 2.3.3 Matrix modifiers 2.3.4 Forensic applications 2.3.5 Other applications 2.3.6 The analysis of nano-structures 2.3.6.1 Reviews and CRMs 2.3.6.2 Methods of analysis 2.4 Nuclear materials 2.4.1 Reviews and overviews 2.4.2 Nuclear forensic and safeguards applications 2.4.3 Other nuclear applications 3 Advanced materials 3.1 Polymeric materials and composites

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