The potential for AMS analysis of 10Be using BeF−

Zhao, Xiaolei; Litherland, A.E.; Doupé, Jonathan P.; Kieser, W.E.

doi:10.1016/j.nimb.2004.04.041

Cited by 30 publications

(9 citation statements)

References 5 publications

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“…This appears to be particularly prominent in the case of negatively charged ions; noteworthy is the very abundant formation of anionic fluoride molecules from many samples. Although several studies have examined such fluoride anions in the past [9][10][11][12][13][14][15], their possible formation and ionization processes and relative abundances are still not known in detail. (A comprehensive review on molecular anions can be found in [16]).…”

Section: Introductionmentioning

confidence: 99%

Sputtered molecular fluoride anions (M=B, Si, P, K, Ti, In, W, Pb)

Gnaser

2009

Nuclear Instruments and Methods in Physics Research Section B:

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Section: Introductionmentioning

confidence: 99%

Sputtered molecular fluoride anions (M=B, Si, P, K, Ti, In, W, Pb)

Gnaser

2009

Nuclear Instruments and Methods in Physics Research Section B:

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“…In an exploration of the use of fluoride molecules in the analysis of 10 Be, Zhou et al observed several orders of magnitude of suppression of the 10 B isobar [9]. The later observation by this group of the ability of fluoride compounds in general, such as PbF 2 , to form strongly bound molecular fluoride anions [10] motivated a more detailed study of this phenomenon [2].…”

Section: Fluoride Matrices For Enhanced Anion Productionmentioning

confidence: 99%

Fluoride sample matrices and reaction cells — new capabilities for isotope measurements in accelerator mass spectrometry

Kieser

Zhao

Eliades

et al. 2012

EPJ Web of Conferences

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Two new techniques, which extend the range of elements that can be analyzed by Accelerator Mass Spectrometry (AMS), and which increase its isobar selection capabilities, have been recently introduced. The first consists of embedding the sample material in a fluoride matrix (e.g. PbF 2 ), which facilitates the production, in the ion source, of fluoride molecular anions that include the isotope of interest. In addition to forming anions with large electron binding energies and thereby increasing the range of analysable elements, in many cases by selection of a molecular form with a particular number of fluorine atoms, some isobar discrimination can be obtained. The second technique, for the significant reduction of atomic isobar interferences, is used following mass selection of the rare isotope. It consists of the deceleration, cooling and reaction of the rare mass beam with a gas, selected so that unwanted isobars are greatly attenuated in comparison with the isotope of interest. Proof of principle measurements for the analysis of 36 Cl and 41 Ca have provided encouraging results and work is proceeding on the integration of these techniques in a new AMS system planned for installation in late 2012 at the University of Ottawa. EPJ Web of Conferences

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“…In 2004 Zhao et al [12] proposed the method of 10 Be measurement using BeF À as a means of reducing 10 B interference. However, the beam intensity of BeF À is much smaller (10-50 times) than BeO À , which offsets its intrinsic advantages over BeO À .…”

Section: Introductionmentioning

confidence: 99%