Towards successful cleaning of chert samples for improved 10Be and 26Al measurements

doi:10.1016/j.nimb.2019.03.030

This content will become publicly available on April 13, 2020

Title: Towards successful cleaning of chert samples for improved 10Be and 26Al measurements

Full Record
Other Related Research

Abstract

In situ-produced cosmogenic ¹⁰Be and ²⁶Al measurements are widely applied in geomorphological studies and in archaeology and paleoanthropology as a chronologic tool applicable to the past 5 Ma. While most of these measurements are made from concentrates of quartz, a ubiquitous and resistant mineral, it is of great interest to extend this method to other silicates and particularly to the amorphous silicates whose purification may not be as straightforward. This paper presents a cleaning procedure that has been applied on ten samples of various siliceous rocks (chert, granite and quartzolite). The aim is to monitor the ¹⁰Be, ²⁷Al and ²⁶Al concentration evolution as a function of cleaning steps. While this protocol appears suitable for ¹⁰Be, when measuring ²⁶Al careful attention should be paid to ²⁷Al, whose concentration should be measured regularly to ensure that a constant value is achieved and most important, allowing measuring ²⁶Al/ ²⁷Al by AMS.

Authors:

Régis, Braucher ^[1]; Alan J., Hidy ^[2]; Ari, Matmon ^[3]; Didier, Bourlès ^[1]; Georges, Aumaître ^[1]; Karim, Keddadouche ^[1]

Aix-Marseille Univ., and CNRS, Marseille (France). CEREG
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Hebrew Univ. of Jerusalem (Israel)
Hebrew Univ. of Jerusalem (Israel)

Publication Date:: 2019-04-13

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1548380

Report Number(s):: LLNL-JRNL-745527
Journal ID: ISSN 0168-583X; 930053

Grant/Contract Number:: AC52-07NA27344

Resource Type:: Accepted Manuscript

Journal Name:: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

Additional Journal Information:: Journal Volume: 456; Journal Issue: C; Journal ID: ISSN 0168-583X

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: Beryllium; Aluminum; Cosmogenic; Silicate; ASTER

Citation Formats


                    Régis, Braucher, Alan J., Hidy, Ari, Matmon, Didier, Bourlès, Georges, Aumaître, and Karim, Keddadouche. Towards successful cleaning of chert samples for improved 10Be and 26Al measurements.  United States: N. p., 2019. 
        Web.  doi:10.1016/j.nimb.2019.03.030.

Copy to clipboard


                    Régis, Braucher, Alan J., Hidy, Ari, Matmon, Didier, Bourlès, Georges, Aumaître, & Karim, Keddadouche. Towards successful cleaning of chert samples for improved 10Be and 26Al measurements.  United States.  doi:10.1016/j.nimb.2019.03.030.

Copy to clipboard


                    Régis, Braucher, Alan J., Hidy, Ari, Matmon, Didier, Bourlès, Georges, Aumaître, and Karim, Keddadouche. Sat .  
        "Towards successful cleaning of chert samples for improved 10Be and 26Al measurements".  United States.  doi:10.1016/j.nimb.2019.03.030.

Copy to clipboard


                    
@article{osti_1548380,

  title        = {Towards successful cleaning of chert samples for improved 10Be and 26Al measurements},

  author       = {Régis, Braucher and Alan J., Hidy and Ari, Matmon and Didier, Bourlès and Georges, Aumaître and Karim, Keddadouche},

  abstractNote = {In situ-produced cosmogenic 10Be and 26Al measurements are widely applied in geomorphological studies and in archaeology and paleoanthropology as a chronologic tool applicable to the past 5 Ma. While most of these measurements are made from concentrates of quartz, a ubiquitous and resistant mineral, it is of great interest to extend this method to other silicates and particularly to the amorphous silicates whose purification may not be as straightforward. This paper presents a cleaning procedure that has been applied on ten samples of various siliceous rocks (chert, granite and quartzolite). The aim is to monitor the 10Be, 27Al and 26Al concentration evolution as a function of cleaning steps. While this protocol appears suitable for 10Be, when measuring 26Al careful attention should be paid to 27Al, whose concentration should be measured regularly to ensure that a constant value is achieved and most important, allowing measuring 26Al/27Al by AMS.},

  doi          = {10.1016/j.nimb.2019.03.030},

  journal      = {Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms},

  number       = C,

  volume       = 456,

  place        = {United States},

  year         = {2019},

  month        = {4}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

This content will become publicly available on April 13, 2020

Publisher's Version of Record

DOI: 10.1016/j.nimb.2019.03.030

Other availability

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

Measurements of production cross sections of 10Be and 26Al by 120 GeV and 392 MeV proton bombardment of 89Y, 159Tb, and natCu targets

Journal Article Sekimoto, S. ; Okumura, S. ; Yashima, H. ; ... - Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Cited by 1
DOI: 10.1016/j.nimb.2015.08.001
Excitation Functions for the Production of 10Be, 26Al, 129I, and 36Cl in the Reaction natPb(p,xn-yp)AZ with Proton Energies up to 2.6 GeV

Journal Article Schumann, D. ; Weinreich, R. ; Michel, R. ; ... - AIP Conference Proceedings

Chemical separation procedures were developed that allow isolating the iodine, chlorine, aluminium, and beryllium fraction from lead targets irradiated with protons in an energy range up to 2.6 GeV. The cross sections of the four nuclides 10Be, 26Al, 129I, and 36Cl were determined; their excitation functions were calculated and compared with theoretical predictions developed within the HINDAS collaboration (EC 5th framework)
DOI: 10.1063/1.1945293
Long-term slip rate of the southern San Andreas Fault, from 10Be-26Al surface exposure dating of an offset alluvial fan

Journal Article der Woerd, J v ; Klinger, Y ; Sieh, K ; ... - Journal of Geophysical Research - Solid Earth, vol. 111, B4, April 15, 2006, Art. No. B04407

We determine the long-term slip rate of the southern San Andreas Fault in the southeastern Indio Hills using {sup 10}Be and {sup 26}Al isotopes to date an offset alluvial fan surface. Field mapping complemented with topographic data, air photos and satellite images allow to precisely determine piercing points across the fault zone that are used to measure an offset of 565 {+-} 80 m. A total of twenty-six quartz-rich cobbles from three different fan surfaces were collected and dated. The tight cluster of nuclide concentrations from 19 samples out of 20 from the offset fan surface implies a simple exposuremore »« less
Full Text Available
Stratigraphic control of landscape response to base-level fall, Young Womans Creek, Pennsylvania, USA [Caprock controls on landscape response to baselevel fall constrained by nested detrital in situ 10Be, Young Womans Creek, Pennsylvania, USA]

Journal Article DiBiase, Roman A. ; Denn, Alison R. ; Bierman, Paul R. ; ... - Earth and Planetary Science Letters

Landscapes are thought to respond to changes in relative base level through the upstream propagation of a boundary that delineates relict from adjusting topography. However, spatially-variable rock strength can influence the topographic expression of such transient landscapes, especially in layered rocks, where strength variations can mask topographic signals expected due to changes in climate or tectonics. Here, we analyze the landscape response to base-level fall in Young Womans Creek, a 220 km ² catchment on the Appalachian Plateau, USA underlain by gently folded Paleozoic sedimentary rocks. We measured in situ ¹⁰Be concentrations in stream sands from 17 nested watersheds, andmore »« less
DOI: 10.1016/j.epsl.2018.10.005
The feasibility of isobaric suppression of ²⁶Mg via post-accelerator foil stripping for the measurement of ²⁶Al [The feasibility of isobaric suppression of 26Mg via post-accelerator foil stripping for the measurement of 26Al.]

Journal Article Tumey, Scott J. ; Brown, Thomas A. ; Finkel, Robert C. ; ... - Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms

Most accelerator mass spectrometry measurements of ²⁶Al utilize the Al- ion despite lower source currents compared with AlO- since the stable isobar ²⁶Mg does not form elemental negative ions. A gas-filled magnet allows sufficient suppression of ²⁶Mg thus enabling the use of the more intense ²⁶AlO- ion. However, most AMS systems do not include a gas-filled magnet. We therefore explored the feasibility of suppressing ²⁶Mg by using a post-accelerator stripping foil. With this approach, combined with the use of alternative cathode matrices, we were able to suppress ²⁶Mg by a factor of twenty. This suppression was insufficient to enable themore »« less
DOI: 10.1016/j.nimb.2012.08.040

Full Text Available

Similar Records