Beryllium-10 Mass Spectrometry with a Cyclotron

Raisbeck, G. M.; Yiou, F.; Fruneau, M.; Loiseaux, J.M.

doi:10.1126/science.202.4364.215

Cited by 97 publications

(20 citation statements)

References 13 publications

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“…The pioneering AMS measurements of 10 Be utilized a cyclotron (Raisbeck et al 1978) and resulted in substantial increases in sensitivity. Raisbeck et al demonstrated that 10 Be/ 9 Be ranging from 10 -8 to 10 -10 could be easily measured achieving a detection sensitivity of ~10 9 atoms.…”

Section: Isotopic Analysis Of 10 Bementioning

confidence: 99%

Rates and Timing of Earth Surface Processes From In Situ-Produced Cosmogenic Be-10

Bierman

Caffee

Davis

et al. 2002

Reviews in Mineralogy and Geochemistry

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Section: Isotopic Analysis Of 10 Bementioning

confidence: 99%

Rates and Timing of Earth Surface Processes From In Situ-Produced Cosmogenic Be-10

Bierman

Caffee

Davis

et al. 2002

Reviews in Mineralogy and Geochemistry

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“…The nuclear accelerator mass spectrometry developed in recent years (e.g., Muller, 1977;Raisbeck et al, 1978; Heath, G.R., Burckle, L.H., et al, Init. Repts.…”

Section: Introductionmentioning

confidence: 99%

10Be Distributions in Deep Sea Drilling Project Site 576 and Site 578 Sediments Studied by Accelerator Mass Spectrometry

Ku¹,

Southon²,

Vogel³

et al. 1985

Initial Reports of the Deep Sea Drilling Project

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Extension of the 10 Be geochronology for deep-sea sediments beyond the limit of late Pliocene age found in published works has been attempted. The results obtained on sediments from Deep Sea Drilling Project (DSDP) Sites 576 and 578 of Leg 86 suggest the feasibility of dating sediments as old as 12 to 15 m.y. At both sites, there have been large changes in sedimentation rate, with the Pleistocene sediments accumulating several times faster than those of the Pliocene, which in turn were deposited several times more rapidly than the late Miocene sediments. The Pleistocene-Pliocene section is considerably thicker in Hole 578 than in Hole 576B: the respective depths for the 7-m.y. time boundary in the two holes are ~ 125 and ~25 m. These 10 Be-based age estimates are in agreement with the paleomagnetic stratigraphies established for the two sites. The suggested enhancement in the oceanic deposition of 10 Be before 7 to 9 m.y. ago, as noticed in manganese crusts, has found tentative support from the present sedimentary records. A preliminary search for 10 Be production variation during a geomagnetic field reversal has been conducted. In Hole 578, an enhanced 10 Be concentration is found in a sample close to the Brunhes/Matuyama reversal boundary. More detailed and systematic measurements are required to confirm this observation, which bears on the detailed behavior of the geomagnetic field during the reversal.

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“…A solution is offered here by accelerator mass spectrometry (AMS) developed 0.1 in the late 1970s [e.g., 12,13,14,15]. With this method, the radionuclides of interest are identified in terms of their mass and nuclear charge and not in terms of their decay processes.…”

Section: Introductionmentioning

confidence: 99%

36Cl measurements in hiroshima granite samples as part of an international intercomparison study

Huber

Rühm²,

Hoshi

et al. 2003

Radiat Environ Biophys

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Within the effort to resolve the so-called Hiroshima neutron discrepancy, an international intercomparison study has been carried out on granite samples from Hiroshima, with participating institutions from Japan, the US, and Germany. (36)Cl and (152)Eu produced in these samples by thermal neutrons from the A-bomb explosion were assessed independently by means of different techniques. At the Maier-Leibnitz-Laboratory near Munich, Germany, (36)Cl concentrations were measured by accelerator mass spectrometry. Measured (36)Cl/Cl ratios ranged from 1,670 x 10(-13) (at a distance of 146 m from the hypocenter) to 2.2 x 10(-13) (at a distance of 1,163 m from the hypocenter). One granite sample not exposed to A-bomb neutrons was measured as a control, and a (36)Cl/Cl ratio of 2.6 x 10(-13) was obtained. On average, our experimental results are 20-30% lower than those provided by model calculations based on the dosimetry system DS86. The results presented here do not support previous assessments of (36)Cl, (60)Co, and (152)Eu which had suggested much larger thermal neutron fluences than those calculated on the basis of DS86 for distances from the hypocenter of more than 1,000 m.

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Beryllium-10 Mass Spectrometry with a Cyclotron

Cited by 97 publications

References 13 publications

Rates and Timing of Earth Surface Processes From In Situ-Produced Cosmogenic Be-10

Rates and Timing of Earth Surface Processes From In Situ-Produced Cosmogenic Be-10

10Be Distributions in Deep Sea Drilling Project Site 576 and Site 578 Sediments Studied by Accelerator Mass Spectrometry

36Cl measurements in hiroshima granite samples as part of an international intercomparison study

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